To create or modify a Voice Codec Profile:
From the Create Media Profile drop down box at the top of the Media Profiles page, select Voice Codec Profile.
From the Codec drop down box, select a codec.
Configure the files and click OK. See field definitions below.
Create Voice Codec Profile
Configure Codecs
Parameter | Description |
---|---|
Description | A name/description for the codec. |
Codec | Specifies the voice codec and encoding scheme used towards the IP side of a VoIP call. The selected codec affects the audio quality and bandwidth consumption of VoIP calls to which you apply the Voice Codec Profile (in the Media Profiles List). The codec choice depends on the interoperability requirements for connecting to other voice peers and bandwidth requirements. Most codecs use data compression algorithms, which saves bandwidth but slightly reduces the voice quality. G.711 does not use compression and requires more bandwidth. The following codecs are supported on SBC Edge platform:
Codec - Additional Specifications
NOTE: Applicable to SWe Lite initiating FAX setup. A G.711 codec must be used for fax detection; tones are detected on the G711 egress (answering CED tone) leg. Otherwise the peer has to initiate fax path.
|
Rate | Specifies the voice sampling rate in bits/sec used by the codec. This parameter applies to G.722.1, G.723.1, G.726, and Opus codecs only. For all other codecs, the voice sampling rate is fixed and defined in the appropriate specification for that codec. |
Payload Size | The recommended length of time in milliseconds rounded up to the next full integer value represented by the media in a packet. Valid entry: 10, 20, 30, 40, 60, 80, 90 (specific codec determines values available).
For Re-Invite Only: If the SBC receives a larger than configured payload size from the peer offer in the re-invite, the SBC rejects with a 488 'Not Acceptable Here' response. The call rolls back to the previous negotiated offer answer. |
Payload Type | Specifies the payload type for this profile. Applies to G722.2, G.726, and Opus codecs only. |
Payload Format | Specifies the mode for the payload: Bandwidth Efficient Mode or Octet Aligned Mode. Default entry: Bandwidth Efficient Mode. This setting applies to G.722.2 only. |
Voice Bit Rate | The maximum Opus bit rate (in bits/second) used for the current session. Valid entry: 0 (use variable bit rate) or 1 (use constant bit rate). Default entry: CBR. Parameter applies to Opus only. |
Use FEC | Specifies whether to use Forward Error Correction (FEC). Valid entry: 0 (do not use FEC) or 1 (use FEC). Default entry: 0. Parameter applies to Opus only. |
Use DTX | Specifies whether to use Discontinuous Transmission (DTX). Valid entry: 0 (do not use DTX) or 1 (use DTX). Default entry: 0. Parameter applies to Opus only. |