Codec RTPmap
Last modified date: 2017/02/22 views: 157
Description


CODEC is capable of coding or decoding a digital data stream or signal by implementing an algorithm. Codecs and priorities are configurable on a per-line basis. The attribute “rtpmap” is used to define a mapping from RTP payload codes to a codec, clock rate and other encoding parameters. An incorrect RTPmap may cause the bad audio quality even unable to set up a call.

Here we are going to list the corresponding attributes of these codecs, please be careful and not to change the value of RTPmap.


Resolution


The corresponding attributes of the codec are listed as follows:

Codec

priority

RTPmap

G722

1

9

G711 (PCMU)

2

0

G711PCMA

3

8

G729

4

18

G723

0

4

G723_53
  (not applicable to
  SIP-T40P/T27P/T27G/T23
  P/T23G/T21(P) E2/T19(P) E2)

0

4

G723_63
  (not applicable to
  SIP-T40P/T27P/T27G/T23
  P/T23G/T21(P) E2/T19(P) E2)

0

4

G726-16

0

103

G726-24

0

104

G726-32

0

102

G726-40

0

105

iLBC

0

106

opus
  (only applicable to
  SIP-T48S/T46S/T42S/T41S
  /T40P/T27G/T23P/T23G/
  T21(P) E2/T19(P) E2)

0

107


Product Type
SIP VP-T49G , SIP-T48S , SIP-T48G , SIP-T46S , SIP-T46G , SIP-T42S , SIP-T42G , SIP-T41S , SIP-T41P , SIP-T40P , SIP-T29G , SIP-T27G , SIP-T27P , T4S , SIP-T23G , SIP-T23P , SIP-T21P E2 , SIP-T19P E2 , VP530 , SIP-T38G , SIP-T32G , SIP-T28P , SIP-T26P , SIP-T22P , SIP-T21P , SIP-T20P , SIP-T19P , IP Phone Expansion Module EXP38 , LCD Expansion Module EXP39
Version
V81 or higher
200/200
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