• Contents

lines.gifSIP line audio options

The following table describes the options that you can use to configure audio options for a SIP line. For information on how to access these options, see Configure a SIP line.

Changes to all of the options on this dialog box take effect immediately.




Audio Path

For information on the available options, see the following resources on the Product Information site:

  • SIP Application Note

  • Telephony Applications Note

  • Interaction Media Server document




Sets the Dual Tone Multi-Frequency (DTMF) type for the station.


The options are:

  • Do not use RFC2833 inband only

  • RFC2833 if supported, otherwise inband (default)

  • RFC2833 only.

RFC2833 if supported, otherwise inband

DTMF Payload


Sets the value that is used for the DTMF Real-time Transport Protocol (RTP) payload value.


The acceptable values are 96-127.


The vendor-specific values are:100, 102-105. Vendor-specific values should not be used for AudioCodes stations.


Voice Activation Detection (VAD)

Determines whether packets are sent for silence.


When Voice Activation Detection is selected, no packets are sent for silence. This option saves bandwidth on your network. However, like compression, there is some loss of voice quality.

18 (24, 011000) CS53

Not selected

Echo Cancellation


Determines whether echo cancellation is used.


Echo cancellation removes echoes from voice communication to improve the sound quality.


Allow Multiple Codecs in Outbound SDP Offer

This option indicates whether CIC delivers all of the available Codecs to the recipient endpoint when a user makes an outbound call. The recipient endpoint can then select which Codec it recognizes.


You set up Codecs in the Locations container.

Not Selected


Related topics

Configure a SIP line

Lines concepts