User`s manual
Mediant 1000
H.323 User's Manual 74 Document #: LTRT-83401
3. 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.
Note 1: If not specified, the ptime gets a default value.
Note 2: 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.
4. From the Rate drop-down list, select the bit rate (in kbps) for the coder you selected.
5. 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.
Note: If not specified, a default is used.
6. From the Silence Suppression drop-down list, enable or disable the silence
suppression option for the coder you selected.
Note: For G.729 it is also possible to select silence suppression without adaptations.
7. Repeat steps 2 to 6 for the second to fifth coders (optional).
8. Click the Submit button to save your changes.
9. To permanently save the changes, refer to Section 5.9.2 on page 193.
Table 5-5: Supported Coders
Coder Name Packetization Time Rate
Payload
Type
Silence
Suppression
G.711 A-law
[g711Alaw64k]
10, 20 (default), 30, 40, 50,
60, 80, 100, 120
Always 64 Always 8
Disable [0]
Enable [1]
G.711 µ-law
[g711Ulaw64k]
10, 20 (default), 30, 40, 50,
60, 80, 100, 120
Always 64 Always 0
Disable [0]
Enable [1]
G.729
[g729]
10, 20 (default), 30, 40, 50,
60
Always 8 Always 18
Disable [0]
Enable [1]
Enable w/o Adaptations
[2]
G.723.1
[g7231]
30 (default), 60, 90
5.3 [0], 6.3 [1]
(default)
Always 4
Disable [0]
Enable [1]
16 [0] (default)
23 or 35
24 [1]
Always 22
32 [2]
Always 2
G.726
[g726]
10, 20 (default), 30, 40, 50,
60, 80, 100, 120
40 [3]
Always 38
Disable [0]
Enable [1]
MS-GSM
[gsmMS]
40 (default) Always 13 Always 3
Disable [0]
Enable [1]
NetCoder
[NetCoder]
20 (default), 40, 60, 80,
100, 120
6.4 [0];
7.2 [1]
8.0 [2]
8.8 [3]
(default)
51
52
53
54
Disable [0]
Enable [1]
Transparent
N/A.