Alcatel 060170-10 User manual

Part No. 060170-10, Rev. C
April 2004
VoIP User Manual
VoIP User Manual
Release 4.5
Release 4.5

Copyright
©
2004 by Alcatel Internetworking, Inc. All rights reserved. This docu ent ay not be reproduced in
whole or in part without the express written per ission of Alcatel Internetworking, Inc.
Alcatel
®
and the Alcatel logo are registered trade arks of Alcatel. Xylan
®
, O niSwitch
®
, PizzaSwitch
®
and
O niStack
®
are registered trade arks of Alcatel Internetworking, Inc.
AutoTracker™, O niAccess™, O niCore™, O ni Switch/Router™, O niVista™, PizzaPort™, PolicyView™,
RouterView™, SwitchManager™, SwitchStart™, VoiceView™, WANView™, WebView™, X-Cell™, X-Vision™
and the Xylan logo are trade arks of Alcatel Internetworking, Inc.
All-In-One
SM
is a service ark of Alcatel Internetworking, Inc. All other brand and product na es are trade arks
of their respective co panies.
This manual documents Release 4.5 Voice over IP (VoIP) hardware and software.
The functionality described in this manual is subject to chan e without notice.
26801 West A oura Road
Calabasas, CA 91301
[phone] FAX [phone]
[email protected]
US Customer Support–[phone]
International Customer Support–[phone]
Internet–http://eservice.ind.alcatel.com
An Alcatel service agree ent brings your co pany the assurance of 7x24 no-excuses technical
support. You’ll also receive regular software updates to aintain and axi ize your Alcatel product’s
features and functionality and on-site hardware replace ent through our global network of highly
qualified service delivery partners. Additionally, with 24-hour-a-day access to Alcatel’s Service and
Support web page, you’ll be able to view and update any case (open or closed) that you have reported
to Alcatel’s technical support, open a new case or access helpful release notes, technical bulletins, and
anuals. For ore infor ation on Alcatel’s Service Progra s, see our web page at
www.ind.alcatel.co , call us at 1-800-995-2696, or e ail us at [email protected] .

page iii
Cautions
FCC Compliance : This equip ent has been tested and found to co ply with the li its for Class A
digital device pursuant to Part 15 of the FCC Rules. These li its are designed to provide reasonable
protection against har ful interference when the equip ent is operated in a co ercial
environ ent. This equip ent generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions in this guide, ay cause interference to radio
co unications. Operation of this equip ent in a residential area is likely to cause interference, in
which case the user will be required to correct the interference at his own expense.
The user is cautioned that changes and odifications ade to the equip ent without approval of the
anufacturer could void the user’s authority to operate this equip ent. It is suggested that the user
use only shielded and grounded cables to ensure co pliance with FCC Rules.
This equip ent does not exceed Class A li its per radio noise e issions for digital apparatus, set out
in the Radio Interference Regulation of the Canadian Depart ent of Co unications.
Avis de conformité aux normes du ministére des Communications du Canada
Cet équipe ent ne dépasse pas les li ites de Classe A d’é ission de bruits radioélectriques pour les
appareils nu ériques, telles que prescrites par le Régle ent sur le brouillage radioélectrique établi
par le inistére des Co unications du Canada.
Lithium Batteries Caution : There is a danger of explosion if the Lithiu battery in your chassis is
incorrectly replaced. Replace the battery only with the sa e or equivalent type of battery
reco ended by the anufacturer. Dispose of used batteries according to the anufacturer’s
instructions. The anufacturer’s instructions are as follows:
Return the module with the Lithium battery to Alcatel. The Lithium battery will
be replaced at Alcatel’s factory.

page iv

page v
Table of Contents
1 VoIP Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
VoIP Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Getting Started with VoIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
VoIP Telephone Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
A VoIP Call Scenario . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Elements of a Converged Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
VoIP H.323 Client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
VoIP H.323 Gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
VoIP H.323 Gatekeeper (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
H.323 VoIP Gateway Voice and Convergence Features . . . . . . . . . . . . . . . . . . . . 1-10
Signaling Control and Voice Interoperability (Voice Features) . . . . . . . . . . . . 1-11
H.323 Call Control and Network Interoperability (Convergence Features) . . . 1-15
H.323 Network Call Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
Alcatel VoIP Network Dialing Schemes (AVNDS) . . . . . . . . . . . . . . . . . . 1-15
Switch Backplane Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
VoIP Standards for Development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
Codec Support (G.711, G.723.1, G.729a) . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
VON (Voice on the Net) Developments . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
VoIP and VLANs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
2 VoIP Daughtercards
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
VoIP Daughtercard Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Digital Signal Processors (DSPs), DIMMs and Available Channels . . . . . . . . 2-4
Voice Switching Daughtercard — Digital . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
VSD Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
VSD Deadman Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8
VSD Cross-Over Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
VSD Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-11
VSD Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Voice Switching Daughtercard — Euro BRI ISDN . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Digital Signal Processors (DSPs) and Available Channels . . . . . . . . . . . . . 2-13
VSB Deadman Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
VSB NT (LT)/TE Cross-Over Toggle Switch . . . . . . . . . . . . . . . . . . . . . . . 2-13
VSB Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
VSB Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-15
VSB Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-16

Table of Contents
page vi
Voice Switching Daughtercard — Analog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
VSA Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
VSA Pinouts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
VSAs and Digital Signal Processors (DSPs), DIMMs and Available
Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
VSAs and the Deadman Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
VSAs and Cross-Over Toggle Switches . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
VSA Jumpers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
VSX Switching Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
VSX Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
VoIP Daughtercard Port Numbering Schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-28
3 Network Dialing Schemes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
How to Select a Network Dialing Scheme (AVNDS) . . . . . . . . . . . . . . . . . . . . 3-3
Network Dialing Scheme VoIP Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
VoIP Networks without PSTN — Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Four Digit Extensions and Two Voice Daughtercards . . . . . . . . . . . . . . . . . . . 3-7
VoIP Networks without PSTN — Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Trunk Groups and Three Voice Daughtercards . . . . . . . . . . . . . . . . . . . . . . . . 3-9
VoIP Networks without PSTN — Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
One Hunt Group (48 Channels Across Two T1s) . . . . . . . . . . . . . . . . . . . . . 3-11
VoIP Networks without PSTN — Example 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
One Hunt Group (60 Channels Across Two E1s) . . . . . . . . . . . . . . . . . . . . . 3-13
VoIP Networks without PSTN — Example 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
One Hunt Group (96 Channels Across Four T1s) . . . . . . . . . . . . . . . . . . . . . 3-15
VoIP Networks without PSTN — Example 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
One Hunt Group (144 Channels Across Six T1s) . . . . . . . . . . . . . . . . . . . . . . 3-17
VoIP Networks without PSTN — Example 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Four Hunt Groups (12 Channels Per Hunt Group) . . . . . . . . . . . . . . . . . . . . 3-19
VoIP Networks without PSTN — Example 8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
48 Individual Hunt Groups (One Channel Per Group) . . . . . . . . . . . . . . . . . 3-21
VoIP Networks without PSTN — Example 9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Trunk Groups and Mixed Length Extensions . . . . . . . . . . . . . . . . . . . . . . . . 3-23
VoIP Networks without PSTN — Example 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Strip Digit Length (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
VoIP Networks without PSTN — Example 11 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Trunk Groups and Eleven Digit Extensions . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
VoIP Networks without PSTN — Example 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
H.323 Gatekeeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
VoIP Networks with PSTN — Example 13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
North American PSTN and VoIP Calls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31

Table of Contents
page vii
VoIP Networks with PSTN — Example 14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
North American PSTN, International PSTN and VoIP Calls . . . . . . . . . . . . . . . 3-37
VoIP Networks with PSTN — Example 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43
PSTN and Eleven Digit Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-43
VoIP Networks with PSTN — Example 16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45
FAX over IP Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45
VoIP Networks with PSTN — Example 17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
Mixed Digital and Analog Voice Daughtercards . . . . . . . . . . . . . . . . . . . . . . 3-47
VoIP Networks with PSTN — Example 18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49
Caller ID (Static) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-49
VoIP Networks with Interoperability — Example 19 . . . . . . . . . . . . . . . . . . . . . . 3-51
H.323 Gateway to Microsoft NetMeeting (without FastStart) . . . . . . . . . . . . . . 3-51
VoIP Networks with Interoperability — Example 20 . . . . . . . . . . . . . . . . . . . . . . 3-53
H.323 Gateway to Cisco Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-53
VoIP Networks with Interoperability — Example 21 . . . . . . . . . . . . . . . . . . . . . . 3-55
H.323 Gateway to OmniPCX 4400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-55
VoIP Networks with Interoperability — Example 22 . . . . . . . . . . . . . . . . . . . . . . 3-57
OmniPCX 4400 and E1 QSIG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-57
VoIP Networks with Interoperability — Example 23 . . . . . . . . . . . . . . . . . . . . . . 3-59
OmniPCX and Euro PRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-59
VoIP Networks with Interoperability — Example 24 . . . . . . . . . . . . . . . . . . . . . . 3-61
Other PBXs with T1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-61
VoIP Networks with Interoperability — Example 25 . . . . . . . . . . . . . . . . . . . . . . 3-63
Other PBXs with Euro BRI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-63
VoIP Networks with Interoperability — Example 26 . . . . . . . . . . . . . . . . . . . . . . 3-65
Mixed European Digital and Analog Voice Daughtercards . . . . . . . . . . . . . . . 3-65
AVNDS Master List of Features by CLI Command . . . . . . . . . . . . . . . . . . . . . . . . 3-67
4 Setup and Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Components of VoIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Assumptions and Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Configuration Restrictions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
General Installation Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Instructions for Additional VoIP Installations . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Example VSM Boot File (
vsmboot.asc
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Table of Contents
page viii
5 VoIP Commands
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Voice Switching Daughtercard Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
voice daughter card ip mask . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
voice daughter card ip address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
voice daughter card ip default gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
voice daughter card activate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-19
voice dump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-20
voice daughter card h.323 out fast start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23
voice daughter card h.323 in fast start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
voice daughter card h.323 auto answer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-25
voice daughter card first digit wait duration . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
voice daughter card inter digit wait duration . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
voice daughter card dial time wait duration . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
voice daughter card termination digit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
voice daughter card cadence coefficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
voice daughter card ring id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
voice daughter card vsb clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32
voice daughter card vsb external clock port . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
voice port interface type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
voice port frame format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-36
voice port circuit identifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-38
voice port nfas framing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39
voice port line build out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40
voice port line length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41
voice port attenuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42
voice port cable type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43
voice port line coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-44
voice port facilities data link protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45
voice port facilities data link port role . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
voice port transmit clock source . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-47
voice port loop back mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-48
voice port signaling mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-49
voice port trap generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50
voice port isdn protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-51
voice port isdn switch type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53
voice port bri line type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-54
voice channel isdn d channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55
voice channel isdn b channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-57
Channel Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-58
voice channel mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-59
voice channel dial in private line automatic ringdown . . . . . . . . . . . . . . . . . . 5-60
voice channel state . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-61

Table of Contents
page ix
Telephony Signaling Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-62
view voice signaling channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-67
voice signaling protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-68
voice signaling out wait . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-69
voice signaling out tone digit duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-70
voice signaling out tone interdigit duration . . . . . . . . . . . . . . . . . . . . . . . . . . 5-71
voice signaling out dialing type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-72
voice signaling call duration limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-73
voice signaling answer wait limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-74
voice signaling hang up wait limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-75
voice signaling fax holdover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-76
voice signaling companding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-77
voice signaling receive gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-78
voice signaling transmit gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-79
voice signaling idle noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-80
voice signaling em on hook debounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-81
voice signaling em off hook debounce . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-82
voice signaling em seize detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-83
voice signaling em clear detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-84
voice signaling em clear confirm detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-85
voice signaling em clear confirm wait max . . . . . . . . . . . . . . . . . . . . . . . . . . 5-86
voice signaling em guard all . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-87
voice signaling em guard out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-88
voice signaling em dial tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-89
voice signaling em min connection time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-90
voice signaling em hang up wait . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-91
voice signaling emw in wink wait min . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-92
voice signaling emw in wink wait max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-93
voice signaling emw in wink duration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-94
voice signaling emw in wink digit ignore . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-95
voice signaling emw out wink wait max . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-96
voice signaling emw out wink duration min . . . . . . . . . . . . . . . . . . . . . . . . . 5-97
voice signaling emw out wink duration max . . . . . . . . . . . . . . . . . . . . . . . . 5-98
voice signaling emi glare report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-99
voice signaling emi digit wait . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-100
voice signaling emd in delay min . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-101
voice signaling emd in delay max . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-102
voice signaling emd in digit ignore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-103
voice signaling emd out integrity check . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-104
voice signaling emd out delay duration min . . . . . . . . . . . . . . . . . . . . . . . . .5-105
voice signaling emd out detail duration max . . . . . . . . . . . . . . . . . . . . . . . . .5-106
voice signaling emd out delay check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-107
voice signaling fxs ls on hook debounce . . . . . . . . . . . . . . . . . . . . . . . . . . .5-108
voice signaling fxs ls off hook debounce . . . . . . . . . . . . . . . . . . . . . . . . . . .5-109
voice signaling fxs ls seize detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-110
voice signaling fxs ls originate clear detect . . . . . . . . . . . . . . . . . . . . . . . . . .5-111
voice signaling fxs ls answer clear detect . . . . . . . . . . . . . . . . . . . . . . . . . . .5-112
voice signaling fxs ls supervisory disconnect wait . . . . . . . . . . . . . . . . . . . . .5-113

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voice signaling fxs ls supervisory disconnect duration . . . . . . . . . . . . . . . . . .5-114
voice signaling fxs ls caller id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-115
voice signaling fxs ls ringing debounce . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-116
voice signaling fxo ls supervisory disconnect detection . . . . . . . . . . . . . . . . .5-117
voice signaling fxo ls supervisory disconnect . . . . . . . . . . . . . . . . . . . . . . . .5-118
voice signaling fxo ls guard out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-119
voice signaling fxo ls ringing inter cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-120
voice signaling fxo ls ringing inter pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-121
voice signaling fxo ls caller id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-122
voice signaling fxo ls answer after . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-123
voice signaling fxo ls loop current debounce . . . . . . . . . . . . . . . . . . . . . . . .5-124
voice signaling fxo ls battery reversal debounce . . . . . . . . . . . . . . . . . . . . . .5-125
voice signaling fxs gs seize detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-126
voice signaling fxs gs on hook debounce . . . . . . . . . . . . . . . . . . . . . . . . . . .5-127
voice signaling fxs gs originate clear detect . . . . . . . . . . . . . . . . . . . . . . . . .5-128
voice signaling fxs gs answer clear detect . . . . . . . . . . . . . . . . . . . . . . . . . . .5-129
voice signaling fxs gs min ring ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-130
voice signaling fxs gs max wait loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-131
voice signaling fxs gs min loop open . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-132
voice signaling fxs gs caller id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-133
voice signaling fxs gs off hook debounce . . . . . . . . . . . . . . . . . . . . . . . . . . .5-134
voice signaling fxs gs ring ground debounce . . . . . . . . . . . . . . . . . . . . . . . .5-135
voice signaling fxs gs ring id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-136
voice signaling fxo gs connection loop open debounce . . . . . . . . . . . . . . . .5-137
voice signaling fxo gs max tip ground wait . . . . . . . . . . . . . . . . . . . . . . . . . .5-138
voice signaling fxo gs tip ground debounce . . . . . . . . . . . . . . . . . . . . . . . . .5-139
voice signaling fxo gs ringing debounce . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-140
voice signaling fxo gs ringing inter cycle . . . . . . . . . . . . . . . . . . . . . . . . . . .5-141
voice signaling fxo gs ringing inter pulse . . . . . . . . . . . . . . . . . . . . . . . . . . .5-142
voice signaling fxo gs caller id detection . . . . . . . . . . . . . . . . . . . . . . . . . . .5-143
voice signaling fxo gs answer after . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-144
voice signaling fxo gs loop current debounce . . . . . . . . . . . . . . . . . . . . . . . .5-145
voice signaling fxo gs battery reversal debounce . . . . . . . . . . . . . . . . . . . . .5-146
voice signaling caller id name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-147
voice signaling caller id number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-148
voice signaling tone table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-149
voice signaling call progress tone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-150
voice signaling call progress tone detection configuration . . . . . . . . . . . . . . .5-151
voice signaling v.18 tone detection threshold hang time . . . . . . . . . . . . . . . .5-152
voice signaling v.18 tone detection threshold level . . . . . . . . . . . . . . . . . . . .5-153
voice signaling v.18 tone detection threshold fraction . . . . . . . . . . . . . . . . . .5-154
voice signaling single frequency tone detection threshold level . . . . . . . . . . .5-155
voice signaling single frequency tone detection threshold time . . . . . . . . . . .5-156
voice signaling echo canceller non-linear sensitivity . . . . . . . . . . . . . . . . . . .5-157
voice signaling acoustic echo canceller mode . . . . . . . . . . . . . . . . . . . . . . . .5-158

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voice signaling acoustic echo canceller non-linear processor . . . . . . . . . . . . .5-159
voice signaling acoustic echo canceller output . . . . . . . . . . . . . . . . . . . . . . .5-160
voice signaling acoustic echo canceller handset speaker gain . . . . . . . . . . . .5-161
voice signaling acoustic echo canceller hands free speaker gain . . . . . . . . . .5-162
voice signaling override in band call progress tones . . . . . . . . . . . . . . . . . . .5-163
voice signaling override full call progress tones . . . . . . . . . . . . . . . . . . . . . .5-164
voice signaling override ring back . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-165
voice signaling override in band codec switching . . . . . . . . . . . . . . . . . . . . .5-166
voice signaling override psu codec switching . . . . . . . . . . . . . . . . . . . . . . . .5-167
voice signaling override network overlap dialing . . . . . . . . . . . . . . . . . . . . .5-168
voice signaling override information element transport . . . . . . . . . . . . . . . . .5-169
voice signaling override qsig information element transport . . . . . . . . . . . . .5-170
voice signaling override setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-171
Coding Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-172
voice coding profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-174
voice no coding profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-175
view voice coding profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-176
voice coding profile all reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-180
voice channel available coding profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-181
voice channel assign preferred coding profile . . . . . . . . . . . . . . . . . . . . . . . .5-182
voice coding profile coding type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-183
voice coding profile voice packet interval . . . . . . . . . . . . . . . . . . . . . . . . . . .5-185
voice coding profile voice network delay buffer mode . . . . . . . . . . . . . . . . .5-186
voice coding profile voice network delay buffer nominal delay . . . . . . . . . . .5-187
voice coding profile voice network delay buffer max delay . . . . . . . . . . . . . .5-188
voice coding profile voice activity detector . . . . . . . . . . . . . . . . . . . . . . . . . .5-189
voice coding profile voice activity detection threshold mode . . . . . . . . . . . . .5-190
voice coding profile voice activity detection threshold level . . . . . . . . . . . . .5-191
voice coding profile voice dtmf relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-192
voice coding profile switchover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-193
voice coding profile call progress tone detection . . . . . . . . . . . . . . . . . . . . .5-194
voice coding profile voice dtmf relay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-195
voice coding profile single frequency tone detection . . . . . . . . . . . . . . . . . .5-196
voice coding profile voice echo canceller . . . . . . . . . . . . . . . . . . . . . . . . . . .5-197
voice coding profile voice echo canceller non linear . . . . . . . . . . . . . . . . . . .5-198
voice coding profile voice echo canceller comfort noise mode . . . . . . . . . . .5-199
voice coding profile echo canceller noise level . . . . . . . . . . . . . . . . . . . . . . .5-200
voice coding profile voice echo canceller tail length . . . . . . . . . . . . . . . . . . .5-201
voice coding profile echo canceller refresh configuration . . . . . . . . . . . . . . .5-202
voice coding profile echo canceller refresh state . . . . . . . . . . . . . . . . . . . . . .5-203
voice coding profile fax rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-204
voice coding profile fax transmit level . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-205
voice coding profile fax carrier detect threshold . . . . . . . . . . . . . . . . . . . . . .5-206
voice coding profile fax timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-207
voice coding profile fax t.38 high speed packet rate . . . . . . . . . . . . . . . . . . .5-208
voice coding profile fax t.38 low speed redundancy . . . . . . . . . . . . . . . . . . .5-209

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voice coding profile fax t.38 high speed redundancy . . . . . . . . . . . . . . . . . .5-210
voice coding profile fax t.38 training check field method . . . . . . . . . . . . . . .5-211
voice coding profile silence detect time . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-212
voice coding profile silence detect level . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-213
voice coding profile g.711 modem resampling mode . . . . . . . . . . . . . . . . . .5-214
voice coding profile caller id . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-215
Voice Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-216
voice network card h.323 gatekeeper control . . . . . . . . . . . . . . . . . . . . . . . .5-217
voice network h.323 gatekeeper mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-218
voice network h.323 gatekeeper address . . . . . . . . . . . . . . . . . . . . . . . . . . .5-219
voice network h.323 allow calls without gatekeeper . . . . . . . . . . . . . . . . . . .5-220
voice network h.323 allow calls without gatekeeper max tries . . . . . . . . . . . .5-221
voice network h.323 endpoint registration type . . . . . . . . . . . . . . . . . . . . . .5-222
voice network h.323 gatekeeper associate . . . . . . . . . . . . . . . . . . . . . . . . . .5-223
voice network h.323 display name . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-224
voice network h.323 rtp port mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-225
voice network h.323 rtp port base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-226
Network Dialing Scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-228
voice destination h.323 endpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-230
voice destination local channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-231
voice no destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-232
view voice destination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-233
voice phone group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-235
voice no phone group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-236
view voice phone group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-237
voice phone group site prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-238
voice phone group site prefix digits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-239
voice phone group type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-240
voice phone group format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-243
voice phone group strip digit length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-244
voice phone group forwarding prefix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-245
voice phone group forwarding prefix digits . . . . . . . . . . . . . . . . . . . . . . . . .5-246
voice phone group add numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-247
voice phone group delete numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-248
voice numbering plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-249
voice no numbering plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-250
view voice numbering plan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-251
voice numbering plan activate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-253
voice numbering plan hunt method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-255
voice numbering plan description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-256
voice numbering plan destination member . . . . . . . . . . . . . . . . . . . . . . . . . .5-257
voice numbering plan phone group member . . . . . . . . . . . . . . . . . . . . . . . .5-258

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System-Wide VoIP Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-259
view voice daughter card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-260
view voice port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-261
view voice channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-262
view voice network card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-263
voice daughter card statistics collection . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-264
voice channel reset all statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-265
view voice channel telephony level stats . . . . . . . . . . . . . . . . . . . . . . . . . . .5-266
view voice channel telephony channel stats . . . . . . . . . . . . . . . . . . . . . . . . .5-267
view voice channel voice playout stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-268
view voice channel dsp stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-269
view voice channel error stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-270
view voice channel modem stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-271
view voice channel fax stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-272
view voice channel isdn level 2 stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-273
voice channel reset telephony level stats . . . . . . . . . . . . . . . . . . . . . . . . . . .5-274
voice channel reset telephony channel stats . . . . . . . . . . . . . . . . . . . . . . . . .5-275
voice channel reset voice playout stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-276
voice channel reset dsp stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-277
voice channel reset error stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-278
voice channel reset modem stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-279
voice channel reset fax stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-280
reset voice channel isdn level 2 stats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-281
Index
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-1

Table of Contents
page xiv

Page 1-1
1 VoIP Overview
Introduction
This chapter describes Alcatel’s H.323 Voice over IP (VoIP) gateway and how telephone or
fax calls can be programmed to automatically go through either an enterprise’s Virtual Private
Network (VPN) via the gateway, and/or the Public Switched Telephone Network (PSTN), a
circuit-switched public telephone network that consists of all the interconnected calling
networks in the world.
Alcatel’s H.323 VoIP gateway provides transparent, seamless delivery and connection of local
and long distance, inbound and outbound telephone calls initiated through standard PSTN
North American (T1), European (E1), and Euro ISDN (Integrated Services Digital Network)
digital telephone transmission lines. For specific details on the precise types of calls handled,
see Chapter 2, “VoIP Daughtercards” and Chapter 5, “VoIP Commands.”
As with standard T1, E1, ISDN (Euro) telephone service, VoIP calls can be transmitted full-
duplex (simultaneously in both directions). Likewise, Alcatel’s H.323 VoIP gateway digitizes
phone or fax call signals and uses one of these call transmission services, depending on the
type of call, to channel the calls, i.e., carry information to a destination point in the VoIP
network. Depending on the configuration of the VoIP network, the calls may also go through
the PSTN. For more details on the digitizing process, see Payload Packetization and Digital
Signal Processing on page 1-12 for more details.
This chapter provides general background information on VoIP networks, clients, gateways
and gatekeepers, and includes a list of key features provided specifically by Alcatel’s H.323
VoIP network. A VoIP call scenario is illustrated and described along with details on the tech-
nologies used in VoIP to explain how calls can be placed over IP. Elements of converged
VoIP network are also shown and described, and significant telephone and data communica-
tions technologies are explained in relation to the VoIP gateway. Technical standards for the
most prominent technologies used in Voice over IP are briefly summarized at the end of this
chapter, since as a whole, H.323 ITU standards define the major components using VoIP tech-
nologies in network-based VoIP communications systems.
VoIP Networks
Alcatel’s H.323 VoIP gateway for packet-switched IP networks combines the speed, versatility
and low cost of IP telephony with standard telephone features for enterprises in North Ameri-
can and Europe (this necessarily entails other continents or countries, such as Mexico, that
may have the same requirements). These networks are referred to as VoIP networks. Because
data networks as such usually operate with extra carrying capacity (bandwidth), most IP
networks are easily able to accommodate voice/fax traffic once the VoIP network is set up.
The Internet Protocol (IP) is used mainly because it is supported over many layer 1 and 2
network technologies including Ethernet (10, 100, 1000 Mbps), Token Ring, FDDI and Frame
Relay to name a few, including leased lines and satellites. Nearly every router, frame relay
device, and network switch used today supports the Internet Protocol. IP delivers any trans-
port media used between local and wide area networks.
Enterprise IP networks consist of local area networks (LANs) installed at corporate offices
often joined together by corporate wide area networks (WANs). Usually the local area
networks support IP on various types of standard data communications technologies such as
Ethernet, Token Ring, ATM (Asynchronous Transfer Mode) and FDDI (Fiber Distributed Data
Interface).

Introduction
Page 1-2
Wide area networks are used to support IP connections over leased lines, public frame relay,
ATM, satellite and ISDN. At each branch office location, enterprises use routers to connect the
remote LANs to the IP WAN. When used with Alcatel’s H.323 VoIP gateway, these Virtual
Private Networks, or VPNs, allow a portion of the Public Switched Telephone Network to be
managed and used by the enterprise.
Alcatel’s H.323 VoIP gateway provides the Voice over IP network capabilities by means of
either digital or analog VoIP daughtercards installed in the switch. The VoIP daughtercards
specifically enable enterprises to control the call routing capabilities of their own organiza-
tions by using a portion of the PSTN.
Getting Started with VoIP
Once an enterprise network is ready to provide VoIP using Alcatel’s H.323 VoIP gateways,
Network Administrators can begin setting up VoIP networks by installing and configuring the
appropriate voice switching daughtercard(s). As a whole, Alcatel’s VoIP H.323 gateways can
be scaled from a minimum of two voice channels per switch to a maximum of 120 voice
channels per switch. Switches with the greatest VoIP scalability will use voice switching
modules (VSXs) in Omni Switch/Routers. See Chapter 2, “VoIP Daughtercards,” for further
details on supported configurations and scalability.
Initially, an Alcatel VoIP network dialing scheme (AVNDS) must also be selected and
deployed via a text-based configuration boot file, wherein each daughtercard must be
assigned a unique IP address among other unique gateway identifiers. From that point, opera-
tional parameters such as channel and port types can be set using the command line inter-
face (CLI) configuration tool. Comparable text-based (ASCII) configuration boot files may also
be quickly generated to configure multiple VoIP-enabled switches with similar requirements.
Also, stored in the
vsmboot.asc
files are voice coding parameters which are pre-configured
and kept in profiles. Coding Profiles are configured directly to the components, and define
which operational VoIP characteristics will be used, and then implemented according to the
instructions contained in the profiles. Coding Profiles consist of general caller information,
voice and fax transmission, coding/decoding settings. Preferred Coding Profiles can be auto-
matically selected based upon payload requirements. Coding Profiles are configured at the
channel level. VoIP configurations for VoIP callers are established by setting up profiles and
then assigning the profiles to each individual H.323 VoIP gateway or daughtercard. Profiles
can be created, modified, copied and deleted using one of the available configuration tools. It
should be known that in most circumstances, the default settings for the Coding Profiles are
sufficient.
Additional parameters that require configuration include calling Destinations and Network
Numbering Schemes, the latter being comprised primarily of Numbering Plans, Phone Groups
and Hunt Methods. Altogether, use of these parameters enable VoIP networks to translate IP
addresses from telephone numbers, and allow communications between the VoIP branch
offices to be configurable. For more details, see Alcatel VoIP Network Dialing Schemes
(AVNDS) on page 1-15.
See Chapter 5, “VoIP Commands,” for details on using these CLI commands once the H.323
VoIP gateway is configured; refer to this chapter as well if using an optional third-party gate-
keeper (server) i.e., NT100 RADVision, on a PC for example, as some additional network
parameters will need to be set.
For details on configuring the AVNDS, see “Chapter 3, “Network Dialing Schemes” and Chap-
ter 5, “VoIP Commands.” For details on installing the cards and setting up VoIP H.323 Gate-
ways, see Chapter 4, “Setup and Installation.”

Introduction
Page 1-3
Alcatel’s H.323 VoIP Gateway Key Features
Alcatel’s H.323 VoIP gateways, which connect voice and data networks, minimize call
complexity and dependency on leased telephone lines by allowing enterprises more control
over their own call processing. Alcatel’s H.323 VoIP gateway is used to transport digitized
voice conversations over IP local area networks, which are then sent over wide are networks
using such protocols as Frame Relay or ATM. All VoIP daughtercards are compatible with the
Alcatel OmniAccess 512 and Omni Switch/Router. As shown below, the following features of
Alcatel’s H.323 VoIP gateway are supported in this release.
• Digital T1/E1 voice and fax transport over IP networks
• T1 and E1 telephony interface links to digital Private Branch Exchanges (PBXs) via digital
or analog VoIP daughtercards.
• T1 robbed-bit Channel Associated Signaling (CAS)
• E1 Primary Rate Interface (Euro PRI) and E1 QSIG ISDN Common Channel Signaling (CCS)
• E1 Basic Rate Interface (Euro BRI) ISDN; (E1 ETSI)
• Foreign Exchange Station (FXS) telephony Loop interface via analog VoIP daughtercard
with (FXS) grand-daughtercard (variations includes FX Office— FXO).
• H.323 Network Call Control Gateway (establishes Local Area Network (LAN) terminal links;
performs call setup and voice translation functions; provides communications procedures
between LANs)
• Voice Codecs: Pulse Code Modulation (G.711), Internet Speech (G.723.1), Standard Tele-
phone Quality (G.729A), Realtime Fax over IP (Fax T.38).
• Non-Voice Signal Monitoring, Detection and Transmission Protocols:
• Dual Tone Multi Frequency/Modem Fax Relay
• Fax Transparency and Fax Relay
• Modem Transparency and Modem Relay
• PSTN Fallback via Deadman Relay Switch
• The H.323 VoIP gateway is capable of providing PSTN fallback for VoIP calls in the
event of a power failure in the VoIP network by means of a Deadman relay switch on
the digital VoIP daughtercards. For more information on the Deadman switch, see
Chapter 2, VoIP Daughtercards.”
• Echo and jitter controls on digital VoIP daughtercards.
• Pre-configured, modifiable AVNDS (Alcatel VoIP Network Dialing Schemes) with corre-
sponding text-based (ASCII) configuration boot files (
vsmboot.asc
files).
• VoIP Text-based Command Line Interface (CLI) configuration tool.
♦ Note ♦
When used separately, the terms E1 and ETSI both
entail European PRI and BRI interfaces. E1 ETSI used
together as one term refers specifically to Euro PRI.

VoIP Telephone Calls
Page 1-4
VoIP Telephone Calls
H.323 VoIP telephone calls, which can carry either voice, facsimile, or modem transmissions
over IP networks, are switched to the packet-based network and connected to the calling
destination (an IP device) via a unique IP address and local/remote dialing plan (actually two
Alcatel VoIP Network Dialing Schemes rolled into one). The numerical IP address, also serv-
ing to identify calls intended for VoIP networks, is determined and translated from a destina-
tion telephone number in a phone directory database while it is being entered, and the call is
in progress. (It should be noted here that callers do not need to remember the IP addresses,
only the called party or destination phone number). See Chapter 3, “Network Dialing
Schemes,” for more information on the AVNDS.
H.323 VoIP telephone calls are transparent so callers don’t have to worry about any special
procedures, except being aware of a dialing plan that may require them to dial a prefix, such
as 7, before a call can be placed across the VoIP network. This would be similar to current
dialing plans requiring callers to dial 9 before an office call can be placed (9 is the prefix
most often used by PBXs to access the PSTN).
VoIP calls initiated from standard telephone handsets after a preset number of digits are
dialed, for example, can be immediately transmitted using IP data networks whereby digital
or analog signals, meant to set up connections for carrying information, are intercepted by
Alcatel’s H.323 VoIP gateways in the network. These gateways translate the phone numbers
into IP addresses, convert the information to digital packet form, and then deliver the calls
over the network and the PSTN as shown below.
A VoIP Call Scenario
Once a VoIP network is set up a typical VoIP call scenario might go something like this.
VoIP Call Scenario — Step 1: Call Setup
Step
1
PBX #2
VoIP H.323 Gateway
VoIP H.323 Gateway
VPN
PBX #1
Destination
IP Address
Source
IP Address
Local Telephone Number Remote Telephone Number
Call setup begins
Dial Tone
Dial
Destination
Number

VoIP Telephone Calls
Page 1-5
VoIP Call Scenario — Step 2: Call Progress
As the caller dials, the H.323 VoIP gateway collects the dialed digits and then ultimately trans-
lates the digits using a pre-configured Numbering Plan and Phone Group into the IP address.
A VoIP session is then initiated with the remote gateway (when gatekeeper not used).
After the gateways determine that the VoIP call can be placed across the IP network, the gate-
ways negotiate call capabilities using preconfigured coding profiles, and then optionally strip
before sending the extension digits from the local to the remote gateway where they are
delivered either to the phone, PBX, or keyset. The call can be processed as either a local or
long distance call depending on how the remote gateway is configured. A ringing or busy
signal is transmitted to the caller once the call is connected. If the call is answered, the gate-
way sends the voice or fax transmissions. If the wide area network is unavailable, calls may
not go through, in which case callers receive a busy signal.
When a caller hangs up the receiver, the VoIP call session is terminated. Multiple gateway
trunks may be used for all calls except those initiated from keysets which must go directly to
the gateway.
Step
2
PBX #2
VoIP H.323 Gateway
VoIP H.323 Gateway
VPN
PBX #1
Destination
IP Address
Source
IP Address
Local Telephone Number Remote Telephone Number
Session setup with remote gateway
Dialed digits
translated to
IP address

VoIP Telephone Calls
Page 1-6
VoIP Call Scenario — Step 3: Call Setup Completed
VoIP Call Scenario — Step 4: Remote Call Answered as VoIP Call
Step
3
PBX #2
VoIP H.323 Gateway
VoIP H.323 Gateway
VPN
PBX #1
Destination
IP Address
Source
IP Address
Local Telephone Number Remote Telephone Number
Call setup completed
IP call
Phone
Rings
(message
returned)
Step
4
PBX #2
VoIP H.323 Gateway
VoIP H.323 Gateway
VPN
PBX #1
Destination
IP Address
Source
IP Address
Local Telephone Number Remote Telephone Number
Call answered
IP call
(message
returned)