Ambit U10C034 User manual

U10C034 Telephony
MSO User’s Manual
Version 1.4
Date: Aug 2008

U10C034 Telephony Version v1.4 June 2008
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U10C034 MSO User’s Manual v1.4 June 2008
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Revision Histor
y
Revision History
Issue Date Author/Prime Description of changes
1.2 ISSUED 19th-May-08 Billy Lo Issued for customer
1.3 ISSUED 5th-June-08 Billy Add new mib object (provisionalResponseEnable) in
section 2.2.15
1.4 ISSUED 5th-August-08 Billy Add description about digital
loopback
Digital loopback support in section
6.5

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Contents
AUDIENCE .........................................................................................................VII
ABOUT THE U10C034 TELEPHONY FIRMWARE .................................................VII
IN THIS DOCUMENT ..........................................................................................VIII
TERMINOLOGY .................................................................................................VIII
OVERVIEW 12
U10C034 TELEPHONY MODEMS .....................................................................13
CORE FUNCTIONALITY ......................................................................................14
FIRMWARE FUNCTIONALITY............................................................................14
MULTIPLE COUNTRY PROFILE SUPPORT............................................................15
PROVISIONING 18
2.1 CONFIGURING CABLE MODEM BEHAVIOR...................................................20
2.1.1 Disabling the CM miniFirewall......................................................20
2.1.2 Resetting non-volatile Memory to Factory Default........................20
2.1.3 Configuring Downstream Scanning ...............................................20
2.1.4 Non-PacketCable DSx Messaging .................................................22
2.2 CONFIGURING EMTA BEHAVIOR..................................................................23
2.2.1 Management Provisioning..............................................................23
2.2.2 Disabling the eMTA firewall..........................................................29
2.2.3 MTA DHCP Option 122/177.........................................................29
2.2.4 Software Upgrade During Calls .....................................................30
2.2.5 Configuring the Jitter Buffer..........................................................30
2.2.6 Configuring for Network Maintenance Operations........................33
2.2.8 EndPoint Provisioning....................................................................37
2.2.9 Telephony Port Diagnostics ...........................................................40
2.2.10 Audible Tone Tables....................................................................45
2.2.11 DQoS Lite Enable ........................................................................48
2.2.12 RFC2833 Enable ..........................................................................48
2.2.13 Configure MTA syslog server Ip address.....................................48
2.2.14 Configure Battery Low Threshold................................................49
2.2.15 Configure MGCP Provisional Response......................................50
WEB INTERFACE 51
3.1 Accessing the Web User Interface ....................................................52
3.2 Web User Interface Home Page........................................................53
3.3 Status.................................................................................................53
3.4 CM Hardware....................................................................................54
3.5 Event Log..........................................................................................55
3.6 CM State............................................................................................56
3.7 Web User Interface Advanced Page..................................................57
3.8 Product – Display status, interface information ................................58
3.9 DHCP – Display CM and MTA DHCP information.........................59
3.10 MTA – Display some detail MTA parameters................................60
3.11 QoS – Display service flow information.........................................61
3.12 Config Params – Display CM and MTA config files information ..62

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3.13 Event Log – Display CM and MTA event logs...............................63
3.14 Using the Password of the day Tool................................................64
3.15 Using the POTD tool.......................................................................64
SSH CLI 65
4.1 Battery...............................................................................................66
4.2 CM ....................................................................................................66
4.3 EMTA ...............................................................................................67
4.4 ENET.................................................................................................68
4.5 PINGHELPER ..................................................................................68
4.6 SYSTEM...........................................................................................70
BATTERY OPERATION 71
5.1 Battery operation in different termperature.......................................72
5.2 Adaptor Mode ...................................................................................72
5.3 Battery Mode.....................................................................................73
5.4 Battery Trap ......................................................................................74
TROBULE SHOOTING 76
6.1 Ambit EMTA supports following troubleshooting interface:............77
6.2 Using MIB for Troubleshooting........................................................77
6.3 LED Verification...............................................................................86
6.4 Troubleshooting the USB driver Installation.....................................87
6.5 Digital Loopback Support.................................................................88
APPENDIX A:EMTA LED BEHAVIOR 89

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About This Document
This document describes standards compliance, telephony features, and data
features of U10C034 Telephony firmware, and how to manage it via
MIBs/VSIFs/Telent-CLI.
Some features described in this document may not be fully tested and supported
in your specific firmware release version. Where possible, features supported only
by specific versions are indicated in this document. See the Release Notes/Letter
of Operational Considerations accompanying your firmware for further details.
AUDIENCE
If you are evaluating U10C034 Telephony products for use in your VoIP network,
you should read this entire manual.
This manual assumes that you have a basic understanding of DOCSIS and
PacketCable standards, and a working knowledge of cable data and telephony
networks.
ABOUT THE U10C034 TELEPHONY FIRMWARE
U10C034 Telephony firmware provides operating, maintenance and trou-
bleshooting functions for the following AMBIT eMTA:
•U10C034 Telephony Modem

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IN THIS DOCUMENT
This document contains the following information:
•Chapter 1, ‘‘Overview,’’ provides a brief overview of the U10C034
MSO User’s Manual.
•Chapter 2, ‘‘Provisioning’’ gives a detail descriptions on
Ambit/Broadcom private Mibs to show you how to use this modem,
while which includes new features required by customer.
•Chapter 3, “Ambit VSIFs” outlines all supported VSIFs in current
U10C034 firmware.
•Chapter 4, ‘‘Telnet CLI,’’ outlines all tenet commands of U10C034.
TERMINOLOGY
The following is a list of terms and abbreviations used in this manual.
AckCel
A Broadcom-proprietary protocol which is to increase TCP-based
performance.
AES
Advanced Encryption Standard. A symmetric 128-bit block cipher that
has been adopted by the US Federal Government as its symmetric data
encryption standard in October 2000, replacing the DES encryption it
used.
CM
Cable Modem. Typically a device installed at the subscriber premises
that provides a high-speed data (Internet) connection through the HFC
network.
CMS
Call Management Server. A generic term for the devices connecting a
VoIP network to the PSTN. A CMS includes both a Call Agent and the
PSTN gateway, and controls audio call connections.

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CMTS
Cable Modem Termination System. A device at a cable headend that
connects to cable modems over an HFC network to an IP network.
CPE
Customer Premises Equipment. Subscriber-owned equipment con-
nected to the network. Technically, a cable modem, MTA, or eMTA
falls into this category, although many operators do not designate them
as such.
CODEC
COder-DECoder. In VoIP products, one of several possible schemes of
converting audio (i.e. a phone call) to digital data and vice versa.
Attributes of a CODEC include fidelity (e.g. voice quality), bandwidth,
and latency.
DOCSIS
Data Over Cable Service Interface Specification. The interoperability
standards used for data communications equipment on an HFC
network.
DTMF
Dual Tone Multi-Frequency. The tones generated by touching the keys
on the phone are used for a variety of purposes including voice mail
systems and voice messaging. Also known as Touchtone.
eMTA
Embedded MTA. A device, such as the AMBIT U10C034 Telephony
Modem, that contains both an MTA and a Cable Modem.
Euro-DOCSIS
The European version of DOCSIS. Euro-DOCSIS specifies an 8 MHz
downstream bandwidth (vs. 6 MHz for DOCSIS); other minor
differences exist as well.
G.711
G.711 is an ITU-T standard for audio companding. It is primarily used
in telephony. This audio standard is mandatory for all video
conferencing systems. It requires a data rate of 56 or 64 kbit/s and
provides an audio bandwidth of 300 ... 3400 Hz.
G.729
G.729 is an audio data compression algorithm for voice that
compresses voice audio in chunks of 10 milliseconds. Music or tones
such as DTMF or fax tones cannot be transported reliably with this
codec, and thus use G.711 or out-of-band methods to transport these
signals. Also very common is G.729a which is compatible with G.729,
but requires less computation. This lower complexity is not free since
speech quality is marginally worsened.
HFC
Hybrid Fiber-Coaxial. A broadband, bi-directional shared media
transmission system using fiber trunks between the headend and fiber
nodes, and coaxial distribution cable between the fiber nodes and
subscriber premises.

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iLBC
internet Low Bitrate Codec. The codec is designed for narrowband
speech and operates either with 30ms or 20ms frame sizes. The bit rate
is 13.3 kbit/s for 30 ms frames (400 bits per block) or 15.2 kbit/s for 20
ms frames (304 bits per block). The iLBC codec enables graceful
speech quality degradation in the case of lost frames, which occurs in
connection with lost or delayed IP packets.
MIB
Management Information Base. The data representing the state of a
managed object in an SNMP-based network management system.
MTA
Multimedia Terminal Adapter. A subscriber premises device that
contains the network interface, CODECs, and all signaling and
encapsulation functions required for telephony support, CLASS
features signaling, and QoS signaling. The MTA is an integral part of
U10C034 Telephony embedded MTA (eMTA) products.
NCS
Network Call Signaling. The PacketCable protocol used to control
calls.
PacketCable
A CableLabs-led initiative aimed at developing interoperable interface
specifications for delivering advanced, real-time multimedia services
over two-way cable plant.
PHS
Payload Header Suppression. A technology used to describe the process
of suppressing the repetitive portion of payload headers at sender and
restoring the headers at the receiver.
QoS
Quality of Service. An attribute of a Service Flow, defining limitations
or guarantees for data rate, latency, and jitter.
Quarantine
A state where an endpoint (phone line) may potentially buffer events.
Events not quarantined are processed normally. Processing of
quarantined events may be delayed, potentially indefinitely.
REN
Ringer Equivalency Number. It is a somewhat arbitrary number which
denotes the loading a telephone ringer has on the line

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RF Radio Frequency
SHA-1
Secure Hash Algorithm. A one-way cryptographic function which takes
a message procedures to a 160-bit message digest.
SNMP
Simple Network Management Protocol.
TDD
Telecommunication Device for the Deaf. An electronic device for text
communication via a telephone line, used when one or more the parties
has hearing or speech difficulties. Other names for TDD include TTY
(Telephone TYpewriter), textphone (common in Europe), and minicom
(U.K.).
VoIP
Telephony over IP. The AMBIT implementation of PacketCable-
compliant telephony services over an HFC network..
UGS
Unsolicited Grant Service. A Service Flow type used for applications
such as telephony in which latency and jitter are critical. Packets have a
fixed size and interval. Within the constraints of IP networking, UGS
flows attempt to deliver a constant bit rate stream of data.

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Overview
This chapter describes U10C034 Telephony hardware and firmware features.
U10C034 Telephony eMTA (also referred to as Embedded MTAs or eMTA),
provide the subscriber connection to the HFC IP network.
U10C034 eMTA firmware complies to following standards:
•DOCSIS 1.1 and DOCSIS 2.0
•PacketCable 1.5

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U10C034 TELEPHONY MODEMS
This section describes the Telephony Modems supported by the current release
of U10C034 firmware.
U10C034 Telephony Modems are the latest generation of AMBIT eMTA,
providing improved technology and features. As with previous generations,
U10C034 Telephony Modems provide telephony via MGCP, 10/100BaseT
Ethernet and USB data connections.

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CORE FUNCTIONALITY
U10C034 firmware provides the following core functionality:
•Multiple provisioning methods.
•Support for up to 16 Upstream Service Flows (SIDs).
•Support for various packetization rates.
•Support of SNMP v1/v2c and v3 coexistence.
•CPE Ethernet — 10/100 BaseT / full-duplex / auto-negotiate function-
ality.
•CPE USB — 1.1 fully supported
•USB to Ethernet bridging functionality
FIRMWARE FUNCTIONALITY
The firmware provides the following functionality:
•Standards compatibility as follows:
– DOCSIS 2.0 and DOCSIS 1.1
– PacketCable 1.5
•Interoperability with main CMTS products.
•MGCP signaling protocol support
•PacketCable provisioning with SNMPv2 Network Management
capabilities.
•Support USB and Ethernet interfaces to CPE.
•Support Telnet access to a troubleshooting command line interface.
•Support for automatically timing out Telnet sessions after a certain
amount of idle time.
•Supports the AckCel technology, increasing performance of TCP
application such as FTP.

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•Secure firmware downloading, conforming to the DOCSIS 1.1
specification.
•Support end of call statistics
•Country Code Profile Support
•Support Time Warner NCS VoIP eMTA Addendum to Vendor
Product Requirements.
MULTIPLE COUNTRY PROFILE SUPPORT
This product supports following telephony standards for different
country. You can use telnet command or MTA configuration file to
indicate modem to follow a specific standard for your VOIP network.
Country Code Mu or A law 2 Wire Input D/A
(dB) A/D (dB) Impedance (Ω) Ring frq. (Hz) Ring Waveform (Vrms) Ring Cadence
North
America Both Yes -4 -2 600 20 57 On=2s Off=4s
TR-57 Both Yes -3 -3 900+2160 20 45 On=2s
Off=4s
Japan Both Yes -3 -3 600+1000 20 45 On=1s
Off=2s
Germany Both Yes -10 -4 220+820||115 25 45 On=1s
Off=4s
Sweden Both Yes -10 -4 270+750||150 25 45 On=1s
Off=5s
UK Both Yes -9 -4 300+1000||220 16.66 45 On=0.4s
Off=0.2s
On=0.4s
Off=2s
France Both Yes -10 -4 600 50 45 On=1.5s
Off=3.5s
Belgium Both Yes -6 -3 150+830||72 25 45 On=1s
Off=3s
Finland
Yes -10 -4 270+910||120 25 45 On=1s Off=4s
Italy Both Yes -3 -3 400+700||200 20 45 On=1s
Off=4s
Switzerland Both Yes -11 -4 270+750||150 25 45 On=1s
Off=4s
ETSI Both Yes -6 -4 270+750||150 20 45 On=1s
Off=3s
Netherlands Both Yes -10 -4 472+637||219 25 45 On=1s
Off=4s
Denmark Both Yes -11 -4 279+750||150 25 45 On=0.75s
Off=7.5s
Chile Both Yes -11 -4 270+750||150 20 50 On=1s
Off=4s
Hungary Both Yes -11 -4 600 25 50 On=1..25s
Off=3.75s
Brazil Both Yes -11 -4 279+750||150 25 45 On=1s

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Off=4s
Austria Both Yes -6 -4 220+820||115 25 45 On=1s
Off=5s
Porland Both Yes -6 -4 220+820||115 25 45 On=1s
Off=4s
Czech Both Yes -6 -4 600 45 45 On=1s
Off=4s
Slovakia Both Yes -6 -4 220+820||115 25 75 On=1s
Off=4s
Ireland Both Yes -6 -4 270+750||150 25 45 On=0.4s
Off=0.2s
On=0.4s
Off=2s
Slovenia Both Yes -6 -4 270+750||150 20 45 On=1s
Off=3s
Romania Both Yes -6 -4 270+750||150 20 45 On=1s
Off=3s

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U10C034 Telephony Version v1.4 June 2008
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Ambit/Broadcom private MIBs provide extensive
support for configuring and controlling PacketCable
NCS based eMTAs where additional functionality has
been added to software above and beyond CableLabs
and other industry specifications. Ambit and
Broadcom’s private enterprise MIBs for Cable data
products(1.3.6.1.4.1.4684/1.3.6.1.4.1.4413.2) currently
consist of the class of devices adhering to Cablelabs
and Excentis specifications for DOCSIS, PacketCable,
and eDOCSIS based devices. Normally the MIB
definitions themselves provide a good overview and
enough information for understanding the purpose and
how to control objects but additional details will be
provided where appropriate. Throughout the
descriptions to MIB objects are references to
interfaces. Ambit’s software can support 8 IP stacks or
interfaces. The assignments of IP addresses is
different if an ePS is included in conjunction with an
eMTA but for the purposes of this document the follow
assignment shows the combined functionality of
DOCSIS or a cable modem along with an eMTA:
•IP Stack (1) = Cable Modem’s public WAN IP
address
•IP Stack (2) = eMTA public WAN IP address
•IP Stack (3) = Cable Modem’s private LAN IP
address 192.168.100.1
Ambit eMTA Proprietary MIBS
•mtaMaintenance.mib
Broadcom CM Proprietary MIBS
•brcm-ping-mgmt.mib
•brcm-bfc-mgmt.mib
•brcm-cm-mgmt-ext.mib

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•brcm-cm-mgmt.mib
Broadcom eMTA Proprietary MIBS
•brcm-emta-mgmt.mib

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2.1 CONFIGURING CABLE MODEM BEHAVIOR
2.1.1 Disabling the CM miniFirewall
brcm-cm-mgmt-ext.mib
MIB Default Value Access
cmMiniFirewallEnable true read-write
cmMiniFirewallEnable
(1.3.6.1.4.1.4413.2.2.2.1.2.1.3.0 Integer32)
This specifies whether the CM mini-firewall will be enabled, provided
the mini-firewall feature is supported. If the feature is not supported,
this object will always report false(2) and an attempt to set it to true(1)
will be rejected with an inconsistent error.
2.1.2 Resetting non-volatile Memory to Factory Default
brcm-cm-mgmt-ext.mib
MIB Default Value Access
cmResetFactoryDefaults NA read-write
cmResetFactoryDefaults
(1.3.6.1.4.1.4413.2.2.2.1.2.1.6.0 Integer32)
Setting this object to true(1) will cause the device to reset all
non-volatile settings to their factory default state. Note that only dynamic
settings will be affected; permanent settings (MAC addresses, etc) will
remain unchanged. When read, this object always returns false(2)."
2.1.3 Configuring Downstream Scanning
brcm-cm-mgmt-ext.mib
MIB Default Value Access
mScanPushFrequency NA read-write
cmScanTable NA table item