User`s manual

H.323 User's Manual 5. Web Management
Version 5.0 107 December 2006
¾ To configure the coder group settings, take these 11 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 5-20: Coder Group Settings Screen
2. From 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 Name drop-down list, select the coder you want to use. For the full list
of available coders and their corresponding attributes, refer to Table 5-5 on page 74.
4. From the Packetization Time drop-down list, select the packetization time (in msec) for
the coder you selected. The packetization time determines how many coder payloads
are combined into a single RTP packet.
5. From the Rate drop-down list, select the bit rate (in kbps) for the coder you selected.
6. In the Payload Type field, if the payload type for the coder you selected is dynamic,
enter a value from 0 to 120 (payload types of ‘well-known’ coders cannot be modified).
The payload type identifies the format of the RTP payload.
7. From the Silence Suppression drop-down list, enable or disable the silence
suppression option for the coder you selected.
8. Repeat steps 3 to 7 for the second to fifth coders (optional).
9. Repeat steps 2 to 8 for the second to fourth coder groups (optional).
10. Click the Submit button to save your changes.
11. To save the changes so they are available after a power fail, refer to Section 5.9.2 on
page 193.
Notes:
• Each coder can appear only once.
• The ptime specifies the packetization time the gateway expects to
receive. The gateway always uses the ptime requested by the remote
side for sending RTP packets.
• If not specified, the packetization time (ptime) gets a default value.
• For G.729 it is also possible to select silence suppression without
adaptations.