Water Noise Issue

[gogotchiya83]

Dear Experts,

We have a big issue in our Network, Some customers complients for a strange noise during Calls (Like Water Noise)
The traces didn't show any Radio problem !!!

FYI we have Huawei access & Core Network...

Any help ?

[patek1968]

Dear Experts,

We have a big issue in our Network, Some customers complients for a strange noise during Calls (Like Water Noise)
The traces didn't show any Radio problem !!!

FYI we have Huawei access & Core Network...

Any help ?

Transmission issue?

[samuraial]

Check the alarms in your BSC and see if there is any active since the time you had this problem.
And almost all the time this problem was related to transmission as patek asked.

B/R

[didemir]

same happened to us after voice over IP activation. it's something about a parameter. you made something about voice over IP ?

[justdream]

Dears,
Could you share more information about Water noise?

[emuvars]

Ussually transcoder issue might become root cause

1st action to conduct comprehensive call trace
2nd action to get PCHR and analyze using NPMaster by modul noise voice

[megaman]

requesting more info for this watery noise, this is become an issue to us now. more people are complaining but replicating the situation is very hard to catch that watery noise.
please help.

[electron]

Hi,

Generally this problem happening due to unsync frames in air interface but i have seen such issue due to RNC or CS core software bug as well. So at first be sure was there any SW upgrade before appearing such phenomena or not. Consult with Huawei support team most probably they have correction patch in conjunction.

Cheers
requesting more info for this watery noise, this is become an issue to us now. more people are complaining but replicating the situation is very hard to catch that watery noise.
please help.

[070057r]

Can u upload a trace file for DT log file showing this issue?

[engtoday]

it's all about transmission

[Ralphobafemi]

Hi.

Water noise or metallic noise needs meticulous investigation. General call quality issues can be checked as below.
1. Check if AMRC switch is ON at RNC algorithm switches, if yes, then ensure RSVDSWITCH0_BIT9 is set to 1 (More of a Silent call solution for UEs checking TB Size)
2. For CS calls routed through the transcoder TCDR, codec conversions will always degrade MOS by about 0.1. to support TCDR, set IUUP_V2_SUPPORT SWITCH=1 in UCORRMALGOSWITCH
3. Packet loss during transcoding or due to IP switching capacity insufficiency can lead to metallic noise.
4. Cell uplink load > 99%, with default equivalent user number ENU and without any load balancing strategies could lead to sharp intermittent noise during voice call
5. Other RF basics, clear all co or adjacent channel interferences by quality AFP

i hope this helps.
should you need further support on real time troubleshooting, mail me: ralphobafemi@gmail.com
I'd be glad to support.
##Pls vote if this helps.