T26P background noise

[ceramirez74]

Hi there,

I just installed a few T19P, one T41P and one T26P IPPhones and the customer immediately started to complain about a background noise that is mostly present at pauses talking and calls to PSTN, however, is also present in between extensions calls in lower intensity, i just compare the codecs on each ip phone and they are in the following order:

PCMU
PCMA
G729
G722

Also in the Yeastar Standard series is as following:

u-law
a-law
GSM
H261
H263
S263P
H264
G722
G726
G729A
SPEEX

I just chaged the Max delay from 240 to 300 in the Yealink jitter buffer parameters and now are as follows:

Type: adaptive
Min Delay: 60
Max Delay: 300
Normal: 120

The Firmware release are:

T19P: 31.72.0.75
T26P: 6.73.0.50
T41P: 36.72.0.55

I would like to have a recomendation or best practices in order to avoid this background noise.

Thanks in advanced.

[Yealink_Michael]

hi

for this issue, please try below :

1.upgrade to the last firmware , firmware down link :
http://support.yealink.com/documentFront...isplayPage
click according to the corresponding model

2. reset to factory and test again

if issue still exist , please provide the trace file needed and send to support@yealink.com . we will try our best to solve
trace file including pcap file, config bin and syslog file , for how to get them , please refer to the FAQ below:
http://forum.yealink.com/forum/showthread.php?tid=1319

[ceramirez74]

Thanks for your recomendations, in fact, the T19P and T26P has the latest firmware version, a will proceed to capture some traces and a will be back to you...