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codecEntry

N/A

Specifies the name of an entity consisting of a codec type along with the set of parameters to use with it. Select a default codec name or enter a custom name. Defaults are:

• G711-DEFAULT
• G711SS-DEFAULT
• G723-DEFAULT
• G723A-DEFAULT
• G726-DEFAULT
• G729A-DEFAULT
• G729AB-DEFAULT

codec

N/A

Select a supported codec. (see

 The active code set is applicable to certain AMR narrow-band codecs. Multiple rates may be selected using comma (,). Valid values are:

• AMR-0-4.75kbps
• AMR-1-5.15kbps
• AMR-2-5.90kbps
• AMR-3-6.70kbps
• AMR-4-7.40kbps
• AMR-5-7.950kbps
• AMR-6-10.20kbps
• AMR-7-12.20kbps

codingRate

N/A

The audio coding rate. (see 

dtmf

N/A

Use this parameter to describe how to handle DTMF digits in the media stream.

• relay – Type of DTMF relay. Select any one of the relay:
  • bothOobAnd2833 – Out-of-Band and RFC 2883 are equally received and both can be transmitted. This option would normally be used only in the case where the OOB DTMF signaling is absorbed and not regenerated. For example, the OOB DTMF might go to an application server that needs to detect the DTMF for control purposes but does not process RTP and the 2833 DTMF would go to the destination media address as part of the RTP stream.
  • eitherOobOrRfc2833 – Out-of-Band and RFC 2833 are equally received and only one is transmitted. The one transmitted is the one preferred by the peer or RFC 2833 as the default.
  • none – Leaves the DTMF tones in-band as encoded audio.
  • outOfBand – Carries DTMF in the signaling protocol.
  • rfc2833 – Encodes DTMF into RTP using format and payload type distinct from audio encoding.
• removeDigits – Enables the removal of DTMF digits from the media stream. This applies only if DTMF relay is configured as outOfBand or rfc2833.
  • disable
  • enable (default)

fax

N/A

The treatment taken when the fax tone is detected.

• failureHandling –The behavior when a fax tone is detected but treatment fails for any reason:
  • continue – (default)

• • Continue to process the call.
  • disconnect – Release the call.
  • honorToneDetection – Enable this flag for G.711 to G.711 transcoded calls to cause the SBC to initiate a fax re-invite upon fax tone detection when the fax toneTreatment configuration is either faxRelayOrFallbackToG711 or fallbackToG711. When disabled, the SBC ignores the fax tone.
  • toneTreatment –Treatment taken when the

• • fax tone is detected

• • . Configuration options are:

• • disconnect– Disconnect the call when the

• • fax tone is detected.

• • fallbackToG711 – Fall back to G.711 when the

• • fax tone is detected.

• • fallbackToG711AllowPeerToNegotiateFaxRelay – Upon detecting a fax tone, SBC transitions call to G.711 if current codec is not already G.711. After transiting to G.711, SBC accepts any T.38 reINVITE from the peer.
  • faxRelay – Switch to fax relay (T.38) when the fax tone is detected.
  • faxRelayOrFallbackToG711 – Switch to fax relay (T.38) if supported or fall back to G.711 when fax tone is detected.
  • ignoreDetectionAllowPeerToNegotiateFaxRelay – Accept a T.38 reINVITE (either from a calling party or a called party) and ignore own fax tone detection event..
  • none – (default) Do nothing when the fax tone is detected.
  • notifyPeer – For SIP signaling, notify the peer when the fax tone is detected and let the peer decide the next action.

Sets the level for Forward-Error-Correction (FEC) Redundancy [AMR only].  The default value of "0" means FEC redundancy is disabled.


initialCodecMode

Use this flag to determine the initial codec mode of an AMR/AMR-WB transcoded call once the call is established.

• disable (default) – AMR/AMR-WB call starts with the highest rate in the active mode set.
• enable – AMR/AMR-WB call starts with a rate determined by the following algorithm:

1. 1. If one codec mode is included in the mode-set, it is the initial codec mode.
   2. If two or three codec modes are included in the mode-set, the initial codec mode is the codec mode with the lowest rate.
   3. If four or more codec modes are included in the mode-set, the initial codec mode is the codec mode with the second lowest rate.

law

N/A

Use this parameter to specify the G.711 law to use.

• ALaw
• ULaw
• deriveFromOtherLeg (default)

Maximum average bit rate in bits/second. Applies to the following codecs:

• Opus - 6000-510000 (default = 20000)

• silk8 - 6000-20000 (default: 20000)

• silk12 - 7000-25000 (default: 25000)

• silk16 - 8000-36000 (default: 36000)

• silk24 - 12000-40000 (default: 40000)

maxBitRate

minBitRate

Use this parameter to specify the maximum interleave depth value to apply to an endpoint (default = 0).

Enable to force mode change to neighboring modes in active codec set as per RFC4867 (applies to AMR and AMRWB).

• disable (default)
• enable

modem

N/A

Specifies the treatment taken when the modem tone is detected, which can be:

• failureHandling – The behavior when a modem tone is detected but the treatment fails for any reason. The behavior can be:
  • continue (default) – Continue to process the call.
  • disconnect – Release the call.
• honorToneDetection – Enable this flag for G.711 to G.711 transcoded calls to cause the SBC to initiate a re-invite upon modem tone detection when the modem toneTreatment configuration is fallbackToG711. When disabled, the SBC ignores the modem tone.
• toneTreatment – Treatment taken when the modem tone is detected, which can be:
  

  • applyFaxTreatment – Treat the modem tone as a fax tone, and apply the fax treatment for the selected codec.

  • disconnect – Disconnect the call when the modem tone is detected. 

  • fallbackToG711 – Fall back to G.711 when the modem tone is detected. 

  • none (default) – Do nothing when the modem tone is detected. 

  • notifyPeer – Notify the peer when the modem tone is detected and let the peer decide the next action.

The AMR mode set is applicable to certain AMR wide-band codecs. The possible values are:

• AMR-0-6.6 
• AMR-1-8.85
• AMR-2-12.65
• AMR-3-14.25
• AMR-4-15.85
• AMR-5-18.25
• AMR-6-19.85
• AMR-7-23.05
• AMR-8-23.85

packetSize

N/A

The packet size in milliseconds (ms). Options are based on the type of codec chosen. (See 

• 20
• 40
• 60
• 80
• 100

preferredRtpPayloadType

0-128

Specifies the preferred Real Time Protocol (RTP) payload type to be included in the RTP header of the data packet. Enter a value in the range 0-128. Default is 128.

sendSid

N/A

Enable or disable for sending SIDs.

Enable/disable Silence Suppression mode.

• disable (default)
• enable
  

Use this flag to specify either Constant Bit Rate (CBR) or Variable Bit Rate (VBR) for OPUS codec (default = 0).

• 0 – Variable Bit Rate
• 1 – Constant Bit Rate

useDtx

Set flag to "1" to use Discontinuous Transmission (DTX) For the OPUS codec (default = 0).

• 0 – Do not use DTX
• 1 – Use DTX

useFec

Set flag to "1" to use Forward Error Correction (FEC) for the OPUS codec (default = 0).

• 0 – Do not use FEC
• 1 – Use FEC

useSilkDTX