CODEC is an abbreviation of compress-decompress, capable of coding or decoding a digital data stream or signal by implementing an algorithm. “rtpmap” is used to define a mapping from RTP payload codes to a codec, clock rate and other encoding parameters.
Many people don’t know how to configure codec via autop, just like as below
account.x.codec.y.enable =
account.x.codec.y.payload_type =
account.x.codec.y.priority =
account.x.codec.y.rtpmap =
In order to solve this issue, please let us know corresponding attributes of the codec, listed as follows:
For T19D/T21, support codec1~codec8
Y |
enable |
priority |
||
G711 (PCMU) |
1 |
1 |
1 |
0 |
G711（PCMA） |
2 |
1 |
2 |
8 |
G723_53 |
3 |
0 |
0 |
4 |
G723_63 |
4 |
0 |
0 |
4 |
G729 |
5 |
1 |
3 |
18 |
G722 |
6 |
1 |
4 |
9 |
iLBC |
7 |
0 |
0 |
106 |
G726-32. |
8 |
0 |
0 |
102 |
For T20P/T22P/T26P/T28P, support codec1~codec11
Y |
enable |
RTPmap(fix) |
||
G711 (PCMU) |
1 |
1 |
1 |
0 |
G711（PCMA） |
2 |
1 |
2 |
8 |
G723_53 |
3 |
0 |
0 |
4 |
G723_63 |
4 |
0 |
0 |
4 |
G729 |
5 |
1 |
3 |
18 |
G722 |
6 |
1 |
4 |
9 |
iLBC |
7 |
0 |
0 |
106 |
G726-16 |
8 |
0 |
0 |
103 |
G726-24 |
9 |
0 |
0 |
104 |
G726-32 |
10 |
0 |
0 |
102 |
G726-40 |
11 |
0 |
0 |
105 |
For T41P/T42G/T46G, codec1~codec12
Y |
enable |
priority |
RTPmap(fix) |
|
G711 (PCMU) |
1 |
1 |
1 |
0 |
G711（PCMA） |
2 |
1 |
2 |
8 |
G723_53 |
3 |
0 |
0 |
4 |
G723_63 |
4 |
0 |
0 |
4 |
G729 |
5 |
1 |
3 |
18 |
6 |
1 |
4 |
9 |
|
iLBC |
7 |
0 |
0 |
106 |
G726-16 |
8 |
0 |
0 |
103 |
G726-24 |
9 |
0 |
0 |
104 |
G726-32 |
10 |
0 |
0 |
102 |
G726-40 |
11 |
0 |
0 |
105 |
GSM |
12 |
0 |
0 |
97 |
The codec name is corresponding Y value and RTPmap , for example ,G729 is cooperate with 18(RTPmap) and 5(Y).
So If want to set G722 with the highest priority, we can set as below
account.1.codec.6.enable = 1
account.1.codec.6.payload_type = 9
account.1.codec.6.priority = 1
account.1.codec.6.rtpmap = G722
The specific explanation:
account.1.codec.6.enable = 1
This means that the codec G722 is enabled on the account 1.
account.1.codec.6.payload_type = 9
This means that the payload of codec G722 is 9.
account.1.codec.6.priority = 1
This means that priority of the codec is the highest.
account.1.codec.6.rtpmap = G722
This means that set codec G722 for account 1.
For more codec infotmaion, please check Administrator Guide and Auto Provisioning Guide
http://support.yealink.com/documentFront/forwardToDocumentFrontDisplayPage
And if any question, please offer all issues info and data to our local distributor or tosupport@yealink.com.
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