Audio Codec
The door phone supports three types of codecs (PCMU, PCMA, and G722) for encoding and decoding the audio data during the call session. Each codec varies in terms of sound quality. PCMU and PCMA are well-suited for traditional telephony and bandwidth-constrained environments, while G722 delivers better audio quality for more modern communication needs.
You can select the specific codec according to the actual network environment.
Set it up on the Account > Advanced > Audio Codecs interface.
Please refer to the bandwidth consumption and sample rate for the three codec types below:
Codec Type | Bandwidth Consumption | Sample Rate |
|---|---|---|
PCMA | 64 kbit/s | 8kHZ |
PCMU | 64 kbit/s | 8kHZ |
G722 | 64 kbit/s | 16kHZ |
Video Codec
The door phone supports the H264 codec that provides better video quality at a much lower bit rate with different video quality and payload.
Set it up on the Account > Advanced > Video Codec interface.
Name: Check to enable the H264 video codec format for the door phone video stream.
Resolution: Select the resolution from the provided options. The default resolution is 4CIF(704×576 pixels).
Bitrate: The video stream bitrate ranges from 128 to 2048 kbps. The greater the bitrate, the more data is transmitted every second, and the clearer the video will be. The default code bitrate is 2048.
Payload: The payload ranges from 90 to 119 for configuring audio/video configuration files. The default is 104.
Video Codec for IP Calls
You can select the IP call video quality by selecting the proper codec resolution according to the network condition.
Set it up on the Phone > Call Feature > IP Video Parameters interface.
Video Resolution: Select the resolution from the provided options. The default resolution is 4CIF(704×576 pixels).
Video Bitrate: The video stream bitrate ranges from 64 to 2048 kbps. The default bitrate is 2048.
Video Payload: The payload ranges from 90 to 119 for configuring audio/video configuration files. The default is 104.