4.2(17) 1616 Phones Crackling Intermittently

[liquidshokk]

Hi

Getting intermittent crackling on IP500 on 4.2(17) with 1616 handsets.

No alarms showing in SSA and no ISDN errors in the monitor trace that I can see.

Any ideas on my next move?

 

[hairlessupportmonkey]

network issues perhaps?

 

[TomMills]

Is the crackling heard by both parties or just the internal parties?

http://www.twitter.com/tem1985

ACSS-SME
Get well soon Aaron.

 

[amriddle01]

Have you tested the curly cords? 1600's are not built to last

ACS - IP Office Implement

"What the Crocodile Hat....was that?

 

[TomMills]

you can usually get them out of the box and onto the desk safely, from then on out who knows

http://www.twitter.com/tem1985

ACSS-SME
Get well soon Aaron.

 

[Bas1234]

Are you using voice recording?

___________________________________________
It works! Now if only I could remember what I did...

Dain Bramaged
___________________________________________

 

[liquidshokk]

Hi

Sorry for asking a question then disappearing!

I am awaiting confirmation on the above questions but I know they are indeed using voice recording.

They have 7 x 1616 handsets which all have call recording enabled.

Also forgot to mention that they are using 3 x BRIs

 

[TomMills]

disable call recording and make a few calls. see if the problems stays.

http://www.twitter.com/tem1985

ACSS-SME
Get well soon Aaron.

 

[liquidshokk]

Call recording was disabled yesterday and I have called for an update. Users have confirmed that call quality has improved and have noticed that the volume has increased considerably too.

They need to get their call recording back on asap so what is the next step now we know the call recording is the culprit? I have only heard of this happening with really early versions.

 

[tlpeter]

Try this what intrigrant posted lately:

What to do against echo:

1 For the VCM settings:
-Set Nonlinear Processor Mode to Disabled.
-Set NLP Comfort Noise Ceiling to -55

2 In NO User ---> source number put the below string
CONFERENCE_DSP_TX_GAIN=n n=-2 or -5

Both steps require a reboot

It should bring considerable improvement

ACS IP Office
APSS IP Office
ACA - Implement IP Telephony -- ACA - Design IP Telephony
APSS UC
ACA - Voice Services Management


______________
Women and cats can do as they please and men and dogs should relax and get used to the idea!

 

[liquidshokk]

Many Thanks tlpeter

I notice that under Nouser there is already CONFERENCE_DSP_TX_GAIN=-3

Im guessing i should remove this one? Also you say "n=-2 or -5" what does this relate to and which should i use?

 

[tlpeter]

Try it with the -3
You can change it between -10 and 5 so -3 if between the -2 and -5



ACS IP Office
APSS IP Office
ACA - Implement IP Telephony -- ACA - Design IP Telephony
APSS UC
ACA - Voice Services Management


______________
Women and cats can do as they please and men and dogs should relax and get used to the idea!

 

[liquidshokk]

I was impatient and rebooted with it as -2

Something to go back and tweak if issues are still present monday i guess. Cheers

 

[liquidshokk]

Have this morning had confirmation that on a couple of occasions since the tweak they have had one way voice and echo on calls.

Any other ideas please?! this ones driving me insane.

 

[intrigrant]

Make Wireshark traces, then you can determine wheter there are network issues or not.

 

[liquidshokk]

Is there anything in particular i should be looking for in wireshark straight away or just leave it capturing for a while?

 

[liquidshokk]

Also, doesnt the latest version 5 SSA include call quality info? Can I just use the latest version of manager with the 4.2 IPO and still get this info?

(Or is it 6 that includes that, cant remember. Question still stands)

 

[tlpeter]

Do not use SSA for this!!!

Use wireshark to see why you do not have voice.


ACS IP Office
APSS IP Office
ACA - Implement IP Telephony -- ACA - Design IP Telephony
APSS UC
ACA - Voice Services Management


______________
Women and cats can do as they please and men and dogs should relax and get used to the idea!

 

[liquidshokk]

tlpeter, i meant in addition to running wireshark ;-)

 

[telecomtekperson]

Do you have a 56xx or 46xx phone you can use to test?
Try using those and see if the problem is replicated.

http://www.telemanuals.com

http://www.telemanuals.com/forum