Administrator’s Guide for Akuvox SP-R5xP IP Phones
Akuvox Proprietary and Confidential. Copyright © 2014 Akuvox network Co., Ltd..
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The RTP Event packet contains 4 bytes. The 4 bytes are distributed over several fields denoted
as Event, End bit, R-bit, Volume and Duration. If the End bit is set to 1, the packet contains the
end of the DTMF event. You can configure the sending times of the end RTP Event packet.
INBAND
DTMF digits are transmitted within the audio of the IP phone conversation. It uses the same
codec as your voice and is audible to conversation partners.
SIP INFO
DTMF digits are transmitted by the SIP INFO messages when the voice stream is established
after a successful SIP 200 OK-ACK message sequence. The SIP INFO message is sent along the
signaling path of the call. The SIP INFO message can support transmitting DTMF digits in three
ways: DTMF, DTMF-Relay and Telephone-Event.
Procedure
Configuration changes can be performed using the configuration files or locally.
Configuration File
<r0000000000xx>.conf/<MAC>.conf
Configure the method of transmitting DTMF,
DTMF Info Type and the payload type.
Local
Web User Interface
Configure the method of transmitting DTMF,
DTMF Info Type and the payload type.
Navigate to:
http://<phoneIPAddress>/fcgi/do?id=3&id=2
To configure DTMF via web user interface:
1. Click on Account > Advanced
2. On DTMF, select the desired type from the pull-down list of Type
3. If Info is selected, select the DTMF info type from the pull-down list of How to Notify DTMF
4. Enter the desired value in DTMF Payload
5. Press Submit to accept the change