[SIPForum-discussion] Decoding G711 audio
mfc at aol.in
mfc at aol.in
Thu May 22 08:16:36 UTC 2008
Hi Srinivas,
Thank you very much for your reply. I appreciate it.
Rajesh R.
-----Original Message-----
From: srinivas.banda at wipro.com
To: mfc at aol.in
Sent: Thu, 22 May 2008 12:03 pm
Subject: RE: [SIPForum-discussion] Decoding G711 audio
?
Hi?Rajesh,
?
answer to your 2nd question
is:
?
you can transmit DTMF tones over sip through INFO
messages(which is called out of band
signalling).
and another way is?thorugh
RFC-2833(RTP Payload for DTMF Digits,
Telephony Tones and Telephony
Signals)
I hope this information will help u
..
?
?
Regards
Srinivas
98864-38345
From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of
mfc at aol.in
Sent: Thursday, May 22, 2008 10:56 AM
To:
discussion at sipforum.org
Subject: [SIPForum-discussion] Decoding G711
audio
Hello all,
I have a
few queries and I am totally new to VoIP.
1. Is there a way to convert
G711 (both alaw and mulaw) back to PCM? I searched through the internet and am
still searching, but I thought I will put up this query to you people as someone
might have experienced this problem already.
2. How are DTMF tones
transmitted over a SIP call? If I dial say 34 when a call is mature, how is this
tone sent to the other end? What are the commands used? Is it sent as a
MESSAGE?
3. Is there a way to retrieve all the registered client
information (the client extension and ID/name) from the SIP Server/Registrar? Is
this possible? Can you provide me some leads to a program or some
API/Functions?
I thank you all for your time. I appreciate
it.
Warm Regards,
Rajesh R.
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