SIP trunks very loud on digital phones and causing dtmf echo

[d00ner62]

I have an issue in which the sip trunk volume is much louder than customers call experience when they had analog trunks. I understand people can just turn their phones down, but then internal calls are quiet. My main concern is that DTMF hitting their DuVoice IVR is actually echoing and thus, when 0 is pressed, they receive 0,0....

The IVR has a dialogic analog card. I am basically looking for the setting, which I think is in the VCM tab, to lower the volume of the entire system when SIP trunks hit digital or analog devices.

It has to be some sort of DB setting but I need to reboot every time I tweak one....

Anyone have any idea?

Thanks in advance!!

 

[joe2938]

reach out to the sip provider

 

[d00ner62]

we are the sip provider. we have 100 customers and 75 are ip office. only one with the issue...

 

[intrigrant]

Sounds like the system is set for Alaw and the SIP only supports Ulaw or vice versa

 

[d00ner62]

Everything is ULAW

 

[amriddle01]

So check your ITSP platform eqipment that provides the trunks just in case, when we've had similar issues it was the provider causing the issue.
Also digit duplication is likely not echo, when SIP trunks carry DTMF it is actually removed from the audio stream before transport and then re-injected before presentation, the removal often isnt 100% so a small amount gets through and then when the DTMF is re-injected there's your duplication...again SIP carrier