Grandstream Dtmf In Audio | Audio-Digital.net

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Fire Panel Dialer to Grandstream HT818 ATA | Greg Sowell ...

https://gregsowell.com/?p=6194#:~:text=First%20is%20the%20DTMF%20method%3A%20Priority%201%20needs,codec%20to%20be%20used%3B%20Grandstream%20calls%20it%20vocoder%3A

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DTMF problem with HT701 (# key) - Grandstream Networks

http://forums5.grandstream.com/t/dtmf-problem-with-ht701-key/37383

Change the order and preference of the DTMF settings to in-audio only and see. BY using the in-audio setting, you are using the DTMF tones as created by the device that is connected to the HT. If that does not work, then use a phone that was connected and working (tested using the #) to the analog of the NS and move to the HT and then try.

Grandstream DTMF settings | IT blog of Andrey Smetanin

https://asmetanin.wordpress.com/2012/04/07/grandstream-dtmf-settings/

When I compared the settings of both phones, I found the reason. On the phone which worked with Record () function, inside account settings we can see that parameter. “Send DTMF: in-audio via RTP (RFC2833) via SIP INFO ”. was checked on “ via RTP (RFC2833) “. On the non-working phone, it was “ in-audio “.

Grandstream Networks, Inc.

https://www.grandstream.com/hubfs/Product_Documentation/ht80x_user_guide.pdf

Grandstream GNU GPL related source code can be downloaded from Grandstream web site from: ... DTMF Methods In-audio, RFC2833 and/or SIP INFO. Provisioning and Control HTTP, HTTPS, FTP, FTPS, SSH, Telnet, TFTP, TR-069, secure and automated provisioning using AES …

telephony - Using DTMF signals of a VoIP gateway when ...

https://networkengineering.stackexchange.com/questions/63348/using-dtmf-signals-of-a-voip-gateway-when-interacting-with-an-analog-ministation

The problem has been solved by changing the following settings on Grandstream HT812: 1) Preferred DTMF method: In-audio. 2) Disable DTMF Negotiation: Yes. With this setting set to 'No', the preferred DTMF method was taken from the result of negotiation with the hosted PBX, which was 'RFC 2833'.

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