Yealink T-4x provisioning : codecs and garbled sound

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) ??