3Com VCX V7122 User Manual page 59

Coder Group Settings
Use the Coders Group Settings screen to define up to four different coder groups. These
coder groups are used in the Tel and IP Profile Settings screens to assign different coders to
Profiles.
To configure the coder group settings, follow these steps:
1
Open the 'Coder Group Settings' screen (Protocol Management menu > Profile
Definitions submenu > Coder Group Settings option); the 'Coder Group Settings'
screen is displayed.
Figure 24 Coder Group Settings Screen
2
In the 'Coder Group ID' drop-down list, select the coder group you want to edit (up to four
coder groups can be configured).
3 From the coder drop-down list, select the coder you want to use. For the full list of
available coders and their corresponding ptimes see the ini file parameter
'CoderName_ID' (described in
Note: Each coder can appear only once.
4
From the drop-down list to the right of the coder list, select the size of the Voice Packet
(ptime) used with this coder in milliseconds. Selecting the size of the packet determines
how many coder payloads are combined into one RTP (voice) packet.
Note 1: The ptime packetization period depends on the selected coder name.
Note 2: If not specified, the ptime gets a default value.
Note 3: The ptime specifies the maximum packetization time the gateway can receive.
5
Repeat steps 3 and 4 for the second to fifth coders (optional).
6 Repeat steps 2 to 5 for the second to forth coder groups (optional).
7
Click the Submit button to save your changes.
8
To save the changes so they are available after a power fail see
page 88.
In the current version, only the ptime of the first coder is sent in the SDP section of
the Invite message.
Tel Profile Settings
Use the Tel Profile Settings screen to define up to four different Tel Profiles. These Profiles
are used in the 'Trunk Group' table to associate different Profiles to gateway's B-channels,
thereby applying different behavior to different VCX V7122 B-channels.
3Com VCX V7122 SIP VoIP Gateway User Manual
Table 26 on page 103).
Save Configuration on
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