Yealink T-4x provisioning : codecs and garbled sound

[jonaskellens]

Hello,

when defining the audio codecs in a provisioning file, the audio is garbled.

This is not the case when I leave out any parameters that have to do with codecs, or when I manually configurate the Yealink T-4x.

Also this is no problem with Yealink T-3x phones, only with T-4x IP-phones.

But I like to define the prefered codecs in my configuration file in stead of using the "default".

I have the following in my configuration file for provisioning (when I leave this out, there is no problem) :

account.1.codec.1.enable = 0
account.1.codec.1.payload_type = PCMU
account.1.codec.1.priority = 1
account.1.codec.1.rtpmap = 0

account.1.codec.2.enable = 1
account.1.codec.2.payload_type = PCMA
account.1.codec.2.priority = 1
account.1.codec.2.rtpmap = 0

account.1.codec.3.enable = 0
account.1.codec.3.payload_type = G723_53
account.1.codec.3.priority =0
account.1.codec.3.rtpmap = 4

account.1.codec.4.enable = 0
account.1.codec.4.payload_type = G723_63
account.1.codec.4.priority = 0
account.1.codec.4.rtpmap = 4

account.1.codec.5.enable = 1
account.1.codec.5.payload_type = G729
account.1.codec.5.priority = 2
account.1.codec.5.rtpmap = 4

account.1.codec.6.enable = 1
account.1.codec.6.payload_type = G722
account.1.codec.6.priority = 3
account.1.codec.6.rtpmap = 9

account.1.codec.7.enable = 0
account.1.codec.7.payload_type = iLBC
account.1.codec.7.priority = 0
account.1.codec.7.rtpmap = 102

account.1.codec.8.enable = 0
account.1.codec.8.payload_type = G726-16
account.1.codec.8.priority = 0
account.1.codec.8.rtpmap = 112

account.1.codec.9.enable = 0
account.1.codec.9.payload_type = G726-24
account.1.codec.9.priority = 0
account.1.codec.9.rtpmap = 102

account.1.codec.10.enable = 0
account.1.codec.10.payload_type = G726-32
account.1.codec.10.priority = 0
account.1.codec.10.rtpmap = 99

account.1.codec.11.enable = 0
account.1.codec.11.payload_type = G726-40
account.1.codec.11.priority = 0
account.1.codec.11.rtpmap = 104


So how can I define my audio codecs in a configuration file for provisioning without having a garbled sound (that makes communication impossible) ??

[Yealink Support]

Hi jonaskellens,

Please don't change the rtpmap of each payload type.
codec Yealink
PCMU 0
PCMA 8
g729 18
GSM 3
g722 9
g723 4
CNG 13
g726-32 102
g726-16 103
g726-24 104
g726-40 105
iLBC 106

[GeorgSchwarz]

Hi!

In our autoprovisioning we just set the payload_type and the enable directive. This does not seem to change along the rtpmap of the "codec-slot" to the correct value.

So we solved the problem (after having checked with Yealink support and recieved the same answer as abobe) by setting the rtpmap for the respective codec to the to the values provided in the answer above:

Here our two sections for G722a and GSM:

account.1.codec.1.payload_type = PCMA
account.1.codec.1.rtpmap = 8
account.1.codec.1.enable = 1

account.1.codec.2.payload_type = GSM
account.1.codec.2.rtpmap = 3
account.1.codec.2.enable = 1

HTH,
best Geore