topic Re: DTMF tones for VOIP in Everything else

DTMF tones for VOIP

longniddry — Mon, 22 Aug 2022 10:17:11 GMT

I have 6 phones using VOIP, they are fine on another network but using plusnet they will not pass DTMF, so users cannot select option 1 etc during a call. Is there a setting in the router to change?

I called plusnet support only to be told they have not been trained in voip so cant do anything. No 2nd line support either

Re: DTMF tones for VOIP

MisterW — Mon, 22 Aug 2022 10:26:26 GMT

Which router do you have ?

Re: DTMF tones for VOIP

longniddry — Mon, 22 Aug 2022 10:28:38 GMT

thanks, Plusnet Hub two

Re: DTMF tones for VOIP

MisterW — Mon, 22 Aug 2022 10:54:51 GMT

The only setting that relates to voip (sip) is SIP ALG on or off. Its in the advanced>firewall>configuration settings. I would normally suggest it should be off, try changing from whatever it is. I'm not sure it would affect dtmf signalling though....

Re: DTMF tones for VOIP

longniddry — Mon, 22 Aug 2022 10:56:26 GMT

thanks I will try, but I have my doubts on that one. Had to change it on another router for a different purpose

thanks for your help

Re: DTMF tones for VOIP

MisterW — Mon, 22 Aug 2022 11:50:48 GMT

I doubt it as well. I really can't see why dtmf signalling should be any different using plusnet.

I assume the plusnet connection is a similar speed and latency to the other which works ?

Re: DTMF tones for VOIP

longniddry — Mon, 22 Aug 2022 11:53:30 GMT

yes much the same, they were using 4g previously

Re: DTMF tones for VOIP

Baldrick1 — Mon, 22 Aug 2022 12:00:36 GMT

Moderators Note

This topic has been moved from Broadband to Everything Else