Preferred Codec
Reference Manual (SIP Version)
Mediatrix 4104
231
The Mediatrix 4104 supports G.729A and G.729AB for encoding and G.729, G.729A and G.729AB for
decoding.
Preferred Codec
The preferred codec is the codec you want to favour during negotiation.
To set a preferred codec:
1.
In the
voiceIfMIB,
locate the
voiceIfCodecPreferred
variable (
voiceIfCodecTable
).
This variable sets the preferred codec for this line.
2.
Choose the codec you want to use from one of the available configurations:
•
pcmu
•
pcma
•
g723
•
g729
•
g726-16kbps
•
g726-24kbps
•
g726-32kbps
•
g726-40kbps
The default value is
pcmu
.
Enabling Individual Codecs
Enabling individual codecs allows you to define codecs that can be considered during negotiation. If codecs
are disabled, they are not considered.
To enable voice codecs:
1.
In the
voiceIfMIB,
choose the codec you want to use (
voiceIfCodecTable
).
You have the choice between the following codecs:
Table 146:
G.729 Features
Feature
Description
Packetization time
Range of 10 ms to 100 ms with increment of 10 ms. See
for more details.
Voice Activity Detection (VAD)
The Mediatrix 4104 supports the annex B. Annex B is the built-in support
of VAD in G.729. See
for more details.
In the
Unit Manager Network Administration Manual
, refer to chapter
Ports Parameters
, section
Port
Configuration Window
.
Table 147:
Enabling Voice Codecs
Codec
Variable
Set to...
PCMU (G.711 u-Law)
voiceIfCodecPcmuEnable
enable
PCMA (G.711 a-Law)
voiceIfCodecPcmaEnable
enable
Summary of Contents for Mediatrix 4104
Page 23: ...Installation and Web Page Configuration ...
Page 24: ...Page Left Intentionally Blank ...
Page 136: ...Chapter 5 Web Interface Telephony Miscellaneous 114 Mediatrix 4104 ...
Page 144: ...Chapter 6 Web Interface Advanced STUN Configuration 122 Mediatrix 4104 ...
Page 145: ...SNMP Configuration ...
Page 146: ...Page Left Intentionally Blank ...
Page 184: ...Chapter 8 IP Address and Network Configuration Ethernet Connection Speed 162 Mediatrix 4104 ...
Page 196: ...Chapter 10 DNS SRV Configuration DNS SRV Oriented Settings 174 Mediatrix 4104 ...
Page 226: ...Chapter 12 Configuration File Download Configuration File Example 204 Mediatrix 4104 ...
Page 242: ...Chapter 13 Software Download Emergency Software Procedure 220 Mediatrix 4104 ...
Page 268: ...Chapter 15 Voice Transmissions User Gain 246 Mediatrix 4104 ...
Page 278: ...Chapter 17 Bypass Configuration Bypass Connector Settings 256 Mediatrix 4104 ...
Page 322: ...Chapter 21 Digit Maps Digit Map Examples 300 Mediatrix 4104 ...
Page 350: ...Chapter 24 Telephony Attributes Call Rejection 328 Mediatrix 4104 ...
Page 362: ...Chapter 27 Quality of Service QoS VLAN 340 Mediatrix 4104 ...
Page 366: ...Chapter 28 Syslog Daemon Syslog Daemon Configuration 344 Mediatrix 4104 ...
Page 370: ...Chapter 29 Statistics RTP Statistics 348 Mediatrix 4104 ...
Page 385: ...Appendices ...
Page 386: ...Page Left Intentionally Blank ...
Page 400: ...Appendix B Standard Hardware Information Warranty 378 Mediatrix 4104 ...
Page 404: ...Appendix C Cabling Considerations RJ 11 Telephone Cable 382 Mediatrix 4104 ...
Page 446: ...Appendix E Glossary Wide Area Network WAN 424 Mediatrix 4104 ...