Zoom ADSL X6v Use and care manual

X6v VoIP
Features
TECHNICAL REFERENCE

Contents
1 INTRODUCTION.....................................................................................................................................................5
USING THE CONFIGURATION MANAGER ...................................................................................................................5
DOWNLOADING CONFIGURATION FILES....................................................................................................................6
CHANGING THE ADMIN PASSWORD ...........................................................................................................................6
2 CHANGING CONFIGURATION PARAMETERS...............................................................................................7
SETTING USER ACCESS PRIVILEGES........................................................................................................................7
3 SYSTEM PARAMETERS ......................................................................................................................................8
VOIP SYSTEM IDENTIFICATION .................................................................................................................................8
DATE/TIME.................................................................................................................................................................8
VOIP SUBSYSTEM NETWORK CONFIGURATION .......................................................................................................9
STATIC IP/DNS CONFIGURATION .............................................................................................................................9
HTTP /TELNET /FTP SERVER ..............................................................................................................................10
STUN SETTINGS .....................................................................................................................................................10
FIRMWARE AND CONFIGURATION UPDATE SETTINGS ............................................................................................10
VOIP SYSTEM MAINTENANCE .................................................................................................................................11
4 VOIP ACCOUNTS.................................................................................................................................................13
LOGGING IN TO THE CONFIGURATION MANAGER ...................................................................................................13
SETTING USER PRIVILEGES ....................................................................................................................................13
MY VOIP ACCOUNT.................................................................................................................................................14
ACCOUNTS 2, 3, AND 4............................................................................................................................................16
5 VOIP PARAMETERS...........................................................................................................................................19
AUDIO SETTINGS .....................................................................................................................................................19
RTP PROTOCOL PARAMETERS...............................................................................................................................20
SDP PROTOCOL PARAMETERS ..............................................................................................................................20
SDP AUDIO CODEC NAMES....................................................................................................................................20
6 SIP PARAMETERS ..............................................................................................................................................21
SIP PROTOCOL PARAMETERS ................................................................................................................................21
SIP RESPONSE CODES...........................................................................................................................................22
SIP DISTINCTIVE RING NAMES ...............................................................................................................................22
SIP PROTOCOL TIMERS ..........................................................................................................................................23
7 REGIONALIZATION.............................................................................................................................................24
CALL PROGRESS TONES.........................................................................................................................................24
Call Progress Tone Parameters .....................................................................................................................25
STANDARD RINGING PATTERNS..............................................................................................................................27
Standard Ringing Patterns Parameters.........................................................................................................27
DISTINCTIVE RINGING PATTERNS ...........................................................................................................................27
Distinctive Ringing Patterns Parameters.......................................................................................................28
DISTINCTIVE CALL WAITING PATTERNS..................................................................................................................28
Distinctive Call Waiting Patterns Parameters...............................................................................................28
VOICE AND TONE PARAMETERS..............................................................................................................................29
Voice, Tone and DTMF Parameters..............................................................................................................29
SLAC Configuration Parameters....................................................................................................................30
Values for Port Impedance (SLAC & CODEC).............................................................................................30
SLAC Command Strings..................................................................................................................................31
Table of Contents 3

CODEC CONFIGURATION.......................................................................................................................................31
CODEC COMMAND STRINGS .................................................................................................................................33
OTHER PARAMETERS ..............................................................................................................................................33
8 SUBSCRIPTION SERVICES ..............................................................................................................................34
SUBSCRIPTION SERVICE SETTINGS ........................................................................................................................34
DIALING PARAMETERS ............................................................................................................................................36
VOIP AND PSTN DIAL PATTERNS ..........................................................................................................................37
DIAL PATTERN PARAMETERS..................................................................................................................................38
Examples of Dial Strings..................................................................................................................................39
North American Number Plan Area (NANPA) Dialing Examples...............................................................40
Dial String Tips..................................................................................................................................................40
Entering Easily-Confused Patterns................................................................................................................41
BRIDGING FROM VOIP TO PSTN............................................................................................................................41
BRIDGING FROM PSTN TO VOIP ............................................................................................................................42
MISCELLANEOUS TELCO PARAMETERS ................................................................................................................42
EMERGENCY SERVICES AND ESERVICES EVENTS .................................................................................................43
9 USER CONFIGURATION....................................................................................................................................44
SPEED DIALS ...........................................................................................................................................................44
CALL FORWARDING .................................................................................................................................................44
RINGING BASED ON CALLER ID ..............................................................................................................................45
DO NOT DISTURB ....................................................................................................................................................45
INCOMING CALL BLOCKING .....................................................................................................................................45
CALL WAITING/CALLER ID ......................................................................................................................................46
TIMERS ....................................................................................................................................................................46
10 FEATURE CODES .............................................................................................................................................49
FEATURE CODE ASSIGNMENTS (*55 –*99) ...........................................................................................................49
NOTICE..................................................................................................................................................................51
4 X6v VoIP Features Technical Reference

1
Introduction
This document describes the ADSL X6v modem's VoIP features. It provides information about the VoIP
configuration parameters and explains how to view and modify them using the Configuration Manager
interface or by downloading configuration files via the VoIP Subsystem's update mechanism.
Using the Configuration Manager
The Configuration Manager is the interface to the ADSL X6v modem. To access the interface:
Type http://192.168.0.1 in your browser's address field. 1
2When prompted, log on in administrator mode, using the following Username and Password:
Username: admin
Password: zoomadsl
Note to service providers: If you are going to lock units to your service, we strongly recommend that
you change the password before shipping any product to the field. See Changing the admin Password on
page 6for instructions.
When the ADSL Setup page opens, click the VoIP icon on the Zoom menu bar to access the VoIP
Subsystem.
3
4
5
Click the Advanced VoIP Setup icon, then select VoIP System from the left pane's menu to access the
configuration parameter categories.
Select items from the VoIP System menu to view or modify the parameters within these groups:
•System Parameters
•VoIP Accounts
•VoIP Parameters
•SIP Parameters
•Regionalization
•Subscription Services
•User Configuration
•Feature Codes
Chapter 1: Introduction 5

Downloading Configuration Files
Configuration files are prepared and stored on the service provider’s update server. At power up, reboot,
or configurable periodic intervals, the VoIP Subsystem can contact an update server. When it contacts
the update server, the VoIP Subsystem provides unique identification. The update server then checks a
database to determine whether there is new firmware and/or a configuration file for the VoIP Subsystem.
If there is, the update server instructs the VoIP Subsystem to download the relevant file or files. The
configuration server can use the VoIP Subsystem’s device identification to prepare a specific
configuration file that might include, for example, detailed account information.
Changing the admin Password
To change the admin password:
Type http://192.168.0.1 in your browser's address field. 1
2
3
4
5
6
7
8
When prompted, log on in administrator mode:
Username: admin
Password: zoomadsl
When the ADSL Setup page opens, click the Router Setup icon on the Zoom menu bar.
On the Router Setup page, click Admin Password.
On the Admin Password Configuration page, type the old and new passwords, then confirm the change.
Click Save.
When the authentication dialog opens, type the new password in the Password field, then click OK.
Click Write Settings to Flash.
Important!
If you change the admin password, and then forget the new password, you cannot retrieve it. You will
need to reset the unit to the factory default settings which will erase any previously saved (changed)
settings.
6 X6v VoIP Features Technical Reference

2
Changing Configuration
Parameters
As administrator (admin), you can view and modify the VoIP configuration parameter values described in
this Technical Reference and set user access privileges for each parameter. See Chapters 3 through 10
for a description of the available menus and configurable parameters.
Setting User Access Privileges
When you are logged on as admin, the VoIP interface displays a pull-down menu labeled User to the right
of each configurable parameter. The pull-down menu values are E, P, Vand -(dash). The value that you
choose defines user access privileges for each field.
Note: Each account page has only one pull-down menu that controls access for all fields on that
page. On some pages, there are additional pull-down menus to the right of the User fields. These
menus are labeled Phone and they control access to features (setting up speed dials, call blocking
based on caller ID, etc.) that can be activated using a handset. For the Phone pull-downs, only the
symbols Eand -(dash) are available.
Value Description
E Full Edit capabilities. Read, write, delete.
P Full Edit with Priority. Cannot be overwritten by
config download via update server
V View. Read only.
- No access. (This value is not seen by the user.)
Chapter 2: Changing Configuration Parameters 7

3
System Parameters
You can use the VoIP -> Advanced VoIP Setup -> VoIP System menu to configure overall system settings. The
menu items include:
•VoIP System Identification
•Date/Time
•VoIP Subsystem Network Configuration
•Static IP/DNS Configuration
•HTTP / Telnet / FTP Server
•STUN Settings
•Firmware and Configuration Update Settings
•VoIP System Maintenance
VoIP System Identification
Parameter Description Default
Boot ROM Revision Boot code revision 6.3.1
Firmware Revision Run-time code revision 6.3.1
Configuration Revision Configuration file revision 6.3.1 – 00/70/72
MAC Address Ethernet MAC address assigned during
manufacture
(as assigned)
Note: Default revisions will vary according to the release date of your product. Configuration suffixes vary by region
Date/Time
Parameter Description Default
Date (yyyy/mm/dd) Current date
Time (23:59:59) Current time
Time Zone (rel. GMT; -12 to 13) Number of hours to subtract from GMT to
form local time
-5
Daylight Savings Enable or disable local application of
daylight savings time
Enabled
Obtain Time from NTP Timeserver Enable or disable use of network
timeserver
Enabled
8 X6v VoIP Features Technical Reference

Parameter Description Default
NTP IP Address Fully qualified domain name (FQDN)
(including an optional port number) for the
NTP/SNTP timeserver server
time-a.nist.gov
Note: When the date and time are set independently of NTP (that is, if a timeserver is unavailable or the
use of a timeserver is disabled), adjustments must be made to a time at least one hour ahead or behind
the currently displayed time, to prevent errors related to the internal workings of the time system.
VoIP Subsystem Network Configuration
Parameter Description Default
VoIP Startup Delay (ms)
Manually configured VoIP subsystem
startup delay. This parameter configures
the VoIP subsystem to delay the indicated
time before booting up. Normally there is
no need to set it. If the VoIP subsystem
has trouble registering at power up, you
might set this delay to allow your X6v
sufficient time to establish a DSL
connection before the VoIP subsystem
attempts to register.
0
VoIP Name Manually configured VoIP subsystem
device name. ZOOM_VoIP
VoIP Host Name Manually configured host device name (or
name automatically assigned and saved). ZOOM_VoIP
VoIP Domain Name Manually configured domain name.
MTU Manually configured maximum transmit
unit size (range of 576 to 1500).
Note: the MTU setting is prepared for the
use of PPPoE. Some system
configurations require an MTU setting of
1500.
1492
Static IP/DNS Configuration
Parameter Description Default
Static IP Address Manually configured IP address (or
address automatically assigned and
saved)
192.168.0.234
Subnet Mask Manually configured local network mask
(or netmask automatically assigned and
saved)
255.255.255.0
Gateway IP Address Manually configured gateway IP address
(or address automatically assigned and
saved)
192.168.0.1
Primary DNS Address Manually configured IP address of
primary domain name server (DNS)
192.168.0.1
Chapter 3: System Parameters 9

Note: You must change the VoIP Subsystem IP/DNS configuration settings first to the new subnet if you
change the LAN subnet of your X6v.
HTTP / Telnet / FTP Server
Parameter Description Default
HTTP Server Access Enable Enable or disable access to Configuration
Manager
Enabled
HTTP Server Port Assigned port number for HTTP server 8080
Telnet Server Enable Enable or disable remote access via
telnet
Enabled
Telnet Server Port Assigned port number for Telnet server 8023
FTP Server Enable Enable or disable remove access via ftp Enabled
FTP Server Port Assigned port number for FTP server 8021
Note: External access may be blocked by your X6v firewall.
STUN Settings
Parameter Description Default
STUN Enable Enables or disables use of STUN for
discovery of Network Address Translation
(NAT) mapping
Enabled
STUN Server Address Fully qualified domain name (including
optional port number) for the STUN server
Firmware and Configuration Update Settings
Parameter Description Default
Update Server Domain Name Fully qualified domain name
(including an optional port number)
for the update server
zoom.voipconfigure.com:
5080
Automatic Configuration Update Enable Control to enable automatic
updating of configuration
Enabled
Automatic Configuration Update on
Reboot
Control to enable automatic update
of configuration on reset
Enabled
Automatic Configuration Update (SIP) Control to enable automatic update
on receipt of SIP message
Disabled
Configuration Update Message on
Request
SYSLOG message body sent when
requesting a configuration update
Configuration update
requested
Configuration Update Message on
Success
SYSLOG message body sent when
configuration update completed
successfully
Configuration update
successful
Configuration Update Message on
Failure
SYSLOG message body sent when
configuration update completed
unsuccessfully
Configuration update
failed
10 X6v VoIP Features Technical Reference

Parameter Description Default
Configuration Update Periodic Delay(s) Periodic delay between configuration
update checks (in seconds - limit
4,294,967,296)
76400
Configuration Update Random Delay(s) Uniform random delay applied when
contact with the update server fails
240
Configuration Update Error Retry
Delay(s)
Fixed delay applied when the
configuration update operation fails
120
Automatic Firmware Update Enable Control to enable automatic updating
of firmware
Enabled
Automatic Firmware Update on Reboot Control to enable automatic update of
firmware on reset
Enabled
Firmware Update Message on Request SYSLOG message body sent when
requesting a firmware update
Firmware Update Message on Success SYSLOG message body sent when
firmware update completed
successfully
Firmware update
successful
Firmware Update Message on Failure SYSLOG message body sent when
firmware update completed
unsuccessfully
Firmware update failed
Firmware Update Periodic Delay(s) Periodic delay between firmware
update checks (in seconds - limit
4,294,967,296)
86400
Firmware Update Random Delay(s) Uniform random delay applied when
contact with the update server fails (in
seconds)
240
Firmware Update Error Retry Delay(s) Fixed delay applied when the
firmware update operation fails (in
seconds)
120
Note: The configuration and/or firmware update periodic delay is by default about a day. This can be
changed to a week by specifying 604,800 seconds, or a month by specifying 2,620,800 seconds.
VoIP System Maintenance
Parameter Description Default
Syslog Enable Enable or disable transmission of
SYSLOG messages
Disabled
Syslog Server Address Fully qualified domain name (including an
optional port number) for the SYSLOG
server
Debug Enable Enable or disable transmission of Debug
messages
Disabled
Debug Server Address Fully qualified domain name (including an
optional port number) for the Debug
server
Debug Level ATA VoIP Subsystem debug 0
Chapter 3: System Parameters 11

Parameter Description Default
Debug Level SIP Session Initiation Protocol debug 0
Debug Level Net Network debug 0
Debug Level PMP Port Mapping Protocol debug 0
12 X6v VoIP Features Technical Reference

4
VoIP Accounts
You can use the VoIP > Advanced VoIP Setup > VoIP Accounts menu to configure user accounts for up to four
providers. The menu items include:
•My VoIP Account
•Accounts 2, 3, and 4
Logging in to the Configuration Manager
To access the VoIP menus, you must log in to the Configuration Manager.
Type http://192.168.0.1 in your browser's address field. 1
2
3
4
When prompted, log on in administrator mode, using the following Username and Password:
Username: admin
Password: zoomadsl
When the ADSL Setup page opens, click the VoIP icon on the Zoom menu bar to access the VoIP
Subsystem.
Click the Advanced VoIP Setup icon, then select VoIP Accounts to view or modify parameters.
Notes to service providers:
If you are going to lock units to your service, we strongly recommend that you change the admin
password before shipping any product to the field. See Changing the admin Password on page 6for
instructions.
As an added precaution, we recommend that you also change the VoIP subsystem password. Please
refer to the deployment package for details.
Setting User Privileges
You may set access to account information for the user level login (see Setting User Access Privileges,
on page 7). For example, you may wish to hide (privilege -) or to make read-only (privilege V) access to
My VoIP Account, and allow full access (privilege E) to accounts 2, 3 and 4. Alternatively, you may want
to hide access to all four accounts.
On each of the account pages there is a column of priority settings on the right-hand side. The top setting
determines access for that page as a whole. The remaining settings determine the privileges of the
individual parameters that they control.
There is a limitation in the implementation of the privileges of the individual parameters. These must all be
the same for all four accounts. Thus, you should set the individual parameters to support the level of
access you wish to grant for the account(s) with the most open access. You may restrict the access to
other accounts by choosing an appropriate value for the top level setting that controls those pages.
Chapter 4: VoIP Accounts 13

The VoIP Express Setup page is affected by settings on the My VoIP Account page. Six parameters on this
page are drawn from the My VoIP Account page, Turn My VoIP Service (On/Off), and the five parameters
beginning My …. The user is granted the same access to these parameters through the Express page as
through the My VoIP Account page. (The VoIP Express Setup page offers control or view of a subset of
settings that are appropriate for many users).
Note: In some fields you might see default values that were used in Zoom’s manufacturing test
procedures. You can safely ignore or delete these values.
My VoIP Account
Parameter Description Default
Turn My VoIP Service Enables (On) or disables (Off) this
account
On
My VoIP Providers Name Name of VoIP provider
My Caller ID When I Call Someone Holds an identifier (name or
number) that can be displayed at
the receiving party’s phone when
someone makes a call from the
VoIP Subsystem to another SIP
phone. When someone makes a
call from the VoIP Subsystem that
terminates on the PSTN, this ID will
generally not display on the
receiving party’s phone.
My VoIP Phone Number (SIP User ID) Specifies the name to be used when
logging in to the service provider’s
server. Commonly implemented in
the form of an E.164 number.
(E.164 is the ITU recommendation
for standard telephone number
format.) This ID/number will often
appear on the receiving party’s
phone as the Caller ID when
someone places a call from the
VoIP Subsystem.
My VoIP Service Authorization ID User name for authentication
My VoIP Service Authorization
Password
User password for authentication
SIP Server Identifies the SIP Server (Format:
FQDN)
14 X6v VoIP Features Technical Reference

Parameter Description Default
Auth Domain Specifies the authentication domain
name corresponding to the
Authentication User Name. This
field must match the authentication
realm URL assigned by the service
provider. It must NOT be translated
into any dotted-decimal address
equivalent. For many service
providers, this can be left blank as
SIP messages in the registration
process will convey the
authentication domain name.
(Format: FQDN)
Outbound Proxy Identifies the outbound proxy server
and port, or if the provider doesn’t
use an outbound proxy server, the
default SIP proxy server and port to
be used when making outgoing
calls. (Format: FQDN)
Register Domain Identifies the default SIP registration
server name and port used to
identify the VoIP Subsystem device
providing the service end-point for
the assigned subscription service.
(Format: FQDN)
ReReg Interval (s) Sets the default registration update
period in seconds. The VoIP
Subsystem must re-register before
this period expires to prevent
service interruption.
120
Subscribe Domain Fully qualified domain name (with
optional port number) for the SIP
registration server. (Format: FQDN)
ReSub Interval (s) Re-subscription interval in seconds 1800
Use Outbound Proxy for REFER Enables or disables the use of an
outbound proxy for SIP service
remote call transfers
Disabled
DNS Server Lookup for SIP Server Enables or disables DNS Server
lookup services for the SIP server
Disabled
Ring Type Selects a distinctive ring type for the
account.
1
Chapter 4: VoIP Accounts 15

Parameter Description Default
Dial Prefix Contains the dial string pattern
matching used to distinguish and
route calls to a VoIP service
provider.
The default for My VoIP Account is
null (that is, all calls are routed via
this account, unless preceded by a
prefix defined for accounts two
through four).
Accounts 2 through 4 can be
configured with prefixes that are
used to invoke these accounts. The
dial string pattern match is in the
standard form. Prefix strings of #8,
#9, 8 and 9, if specified, are
automatically removed from the
dialed number. Other prefixes can
be altered through the substitution
flexibilities of the pattern matching
strings.
Preferred Codecs Allows listing, in order of preference,
the Codec code points preferred for
use with the service provider.
Menu options are: G.711u, G.711A,
G.729B, and iLBC.
The codecs listed here must also
be included in the Preferred Codecs
list under Audio Settings on the VoIP
Parameters page.
If any codecs are listed here, then
only those codecs will be
negotiated. If no codecs are listed
here, then all Preferred Codecs
options will be negotiated.
Accounts 2, 3, and 4
Parameter Description Default
Turn My VoIP Service Enables or disables this account Disabled
My VoIP Provider Name Name of VoIP provider
16 X6v VoIP Features Technical Reference

Parameter Description Default
My Caller ID When I Call Someone Holds the number that can be
displayed at the receiving party’s
phone when the user makes a call
from the VoIP Subsystem to another
SIP phone. When the user makes a
call from the VoIP Subsystem that
terminates on the PSTN, this name
will generally not display on the
receiving party’s phone.
My VoIP Phone Number (SIP User ID) Specifies the name to be used when
logging in to the service provider’s
server. Commonly implemented in
the form of an E.164 number. This
ID/number will often appear on the
receiving party’s phone as the
Caller ID when someone places a
call from the VoIP Subsystem.
My VoIP Service Authorization ID User name for authentication
My VoIP Service Authorization
Password
User password for authentication
SIP Server Identifies the SIP Server. (Format:
FQDN)
Auth Domain Specifies the authentication domain
name corresponding to the user's
Authorization ID.This field must
match the authentication realm URL
assigned by the service provider. It
must NOT be translated into any
dotted-decimal address equivalent.
For many service providers, this can
be left blank as SIP messages in
the registration process will convey
the authentication domain name.
(Format: FQDN)
Outbound Proxy Identifies the outbound proxy server
and port, or if the provider doesn’t
use an outbound proxy server, the
default SIP proxy server and port to
be used when making outgoing
calls. (Format: FQDN)
Register Domain Identifies the default SIP registration
server name and port used to
identify the VoIP Subsystem device
providing the service end-point for
the assigned subscription service.
(Format: FQDN)
Chapter 4: VoIP Accounts 17

Parameter Description Default
ReReg Interval (s) Sets the default registration update
period in seconds. Once the period
has expired, the VoIP Subsystem
must re-register to prevent service
interruption.
120
Subscribe Domain Fully qualified domain name (with
optional port number) for the SIP
registration server. (Format: FQDN)
ReSub Interval (s) Re-subscription interval in seconds 120
Ring Type Selects a distinctive ring type for the
account.
2 for Account 2
3 for Account 3
4 for Account 4
Dial Prefix Contains the dial string pattern
matching used to distinguish and
route calls to a VoIP service
provider.
The default is null (i.e., all calls are
routed via this account, unless
preceded by a prefix defined for
accounts two through four).
Accounts 2, 3, and 4 can be
configured with prefixes that are
used to invoke these accounts. The
dial string pattern match is in the
standard form. Prefix strings of #8,
#9, 8 and 9, if specified, are
automatically removed from the
dialed number. Other prefixes can
be altered through the substitution
flexibilities of the pattern matching
strings.
Preferred Codecs Allows listing, in order of preference,
the Codec code points preferred for
use with the service provider.
Menu options are: G.711u, G.711A,
G.729B, and iLBC.
The codecs listed here must also
be included in the Preferred Codecs
list under Audio Settings on the VoIP
Parameters page.
If any codecs are listed here, then
only those codecs will be
negotiated. If no codecs are listed
here, then all Preferred Codecs
options will be negotiated.
18 X6v VoIP Features Technical Reference

5
VoIP Parameters
You can use the VoIP > Advanced VoIP Setup > VoIP Parameters menu to configure various common aspects
of the VoIP Subsystem device. The menu items include:
•Audio Settings
•RTP Protocol Parameters
•SDP Protocol Parameters
•SDP Audio Codec Names
Audio Settings
Parameter Description Default
Preferred Codecs Lets you arrange the Codec names in
order of preference. These entries must
agree with the Preferred Codecs specified
on the My VoIP Account page.
G.711u, iLBC,
G.729B,
G.711A
Silence Suppression Enable Prevents audio frames from being sent
during periods of silence, thus reducing
the network traffic necessary for making
calls. (Note: This feature is useful only
with audio codecs that support silence
suppression.)
Disabled
Echo Canceller Enable If enabled, the G.168 echo canceller is
applied to all calls.
Enabled
Echo Canceller Mode Sets the echo canceller operating mode. Do not change the
setting, which is 2.
Echo Canceller Tail Length (ms) Specifies length of echo canceller in msec 16
Fax Transmission Mode Control for FAX processing method: Off,
or Passthrough (μLaw or ALaw)
Off
DTMF Transmission Method Control for DTMF processing method: Off,
Audio Passthrough, RTP Out-of-band,
SIP Out-of-band
RTP Out-of-band
iLBC High Rate Enable Enables 15.2 kbps / 20 ms frames. When
disabled, 13.33 kbps / 30 ms frames.
Many implementations negotiate 13.33
kbps / 30 ms only.
Disabled
Chapter 5: VoIP Parameters 19

RTP Protocol Parameters
Parameter Description Default
Base RTP port (1024-65535) The minimum IP port number for RTP
traffic. Can be used in conjunction with
firewall mappings.
1234
Maximum RTP port (1024-65535) The maximum IP port number for RTP
traffic.
1253
RTP Public External IP Address Forces a specific external IP address as
the source address for SDP messages
that the VoIP Subsystem sends.
0.0.0.0
RTP Public External Port Specifies the RTP port associated with
the minimum RTP port number in a NAT
firewall that performs fixed port mapping.
0 (Disabled)
RTP TOS Value (0x00-0xff) Type of service (TOS) value or DIFFServ
DSCP used for RTP (audio) packets.
68 (Assured
Forwarding)
RTP Packet Duration (ms) The duration (in milliseconds) for frame-
based codecs
30
RTP Stream Duration (ms) The duration (in milliseconds) for sample
stream-based codecs
20
RTP Session Timeout Interval (s) The session timeout interval (in seconds) 120
RTP Jitter Buffer Start Depth (ms) The start depth (in milliseconds) of the
buffer
20
RTP Jitter Buffer Minimum Depth (ms) The minimum depth (in milliseconds) of
the buffer
20
SDP Protocol Parameters
Parameter Description Default
SDP Session Name Identifies the session name. -
SDP Session Owner Identifies the session owner. Zoom
SDP Audio Codec Names
These parameters are passed to the remote end-point for outgoing calls only.
Parameter Description Default
G711u Codec (PCMU/8000) The string passed during outgoing calls to
negotiate the payload type for G.711
μLaw
PCMU/8000
G711A Codec (PCMA/8000) The string passed during outgoing calls to
negotiate the payload type for G.711
ALaw
PCMA/8000
G729b Codec (G729B/8000) The string passed during outgoing calls to
negotiate the payload type for G.729B
G729B/8000
iLBC/Codec (iLBC/8000) The string passed during outgoing calls to
negotiate the payload type for iLBC
iLBC/8000
20 X6v VoIP Features Technical Reference