Syntax

Parameters

sdp_capabilities

Specifies where to search for the SDP property:

• Local—The capabilities of the device for the subscriber.
• Remote—The capabilities of the device for the remote party.
• Common—The capabilities that the local and remote devices have in common.

SDP property

A comma-delimited list of SDP properties. Specify the SDP properties using one of the following methods:

• Generic descriptor

  sdp.[option]

  Where:

  option

  Is any name (for example, i) or any keyword (for example, a=ptime)

  Examples using an SDP generic descriptor:

  • where the common sdp.[a] exists
  • where the remote sdp.[a=ptime] exists
  • where the common sdp.[gd] exists

• Media descriptor

  sdp.[m.option]

  Where:

  option

  • fmt
  • port
  • numberofports
  • media
  • proto

  Examples using an SDP media descriptor:

  • where the local sdp.[m] exists

• rtpmap

  sdp.[codec-name(codec-name).rtpmap.OPTION]

  Where:

  codec-name

  Specifies a codec name.

  option

  • payloadtype
  • clockrate
  • encodingparameters

• fmtp

  sdp.[codec-name(codec-name).fmtp.OPTIONS]

  Where:

  codec-name

  Specifies a codec name.

  option

  • fmt
  • profile-level-id
  • mode-set
  • packetization-mode
  • Any other parameter to be conveyed

  Examples using fmtp:

  • where the common sdp.[codec-name(AMR-WB).fmtp.fmt] exists

accessibility

One of the following:

• exists (default)
• does not exist

Description

Checks for the existence or non-existence of any SDP property.