R28 Door Phone Administrator Guide
transmission type of the third party device to be matched with as the party for
receiving signal data.
•
How to Notify DTMF: select among four types: Disable, DTMF, DTMF-Relay and
Telephone-Event according to the specific type adopted by the third party device.
You are required to set it up only when the third party device is to be matched with
adopts such modes: Info, Info+Inband, Info+RFC2833, and Info +Inband + RFC2833.
•
DTMF Payload: set the payload according to the specific data transmission payload
agreed on between the sender and receiver during the data transmission.
11.4
Audio Codec Configuration
Akuvox door phones support four types of codec (PCMU, PCMA, G729, and G722) for
encoding and decoding the audio data during the call session. Each type of Codec varies in
terms of sound quality. You can select the specific codec with different bandwidths and
sample rates flexibly according to the actual network environment. It is only available for
SIP calls. To do the configuration on device web Account > Advancedinterface.
Please refer to the bandwidth consumption and sample rate for the four codecs types below:
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