AudioCodes Mediant 4000 SBC User Manual page 459

CHAPTER 19 Coders and Profiles
Parameter
SBC Hold
'Remote Hold Format'
remote-hold-Format
[IPProfile_
SBCRemoteHoldFormat]
Description
Note:
■ When the parameter is changed from Database URL to
Transparent, new 3xx Contact headers remain
unchanged. However, requests with the special prefix
continue using the device's database to locate the new
destination.
■ Optional values IP Group Name and Local Host are
applicable only to 3xx responses received due to
INVITE messages.
■ Only one database entry is supported for the same
host, port, and transport combination. For example, the
following URLs cannot be distinguished by the device:
✔
sip:10.10.10.10:5060;transport=tcp;param=a
✔
sip:10.10.10.10:5060;transport=tcp;param=b
■ The database entry expires two hours after the last use.
■ The maximum number of destinations (i.e., database
entries) is 50.
■ The corresponding global parameter is
SBC3xxBehavior.
Defines the format of the SDP in the SIP re-INVITE (or
UPDATE) for call hold that the device sends to the held
party.
■ [0] Transparent = (Default) Device forwards SDP as
is.
■ [1] Send Only = Device sends SDP with 'a=sendonly'.
■ [2] Send Only Zero Ip = Device sends SDP with
'a=sendonly' and 'c=0.0.0.0'.
■ [3] Inactive = Device sends SDP with 'a=inactive'.
■ [4] Inactive Zero Ip = Device sends SDP with
'a=inactive' and 'c=0.0.0.0'.
■ [5] Not Supported = This option can be used when the
remote side does not support call hold. The device
terminates call hold requests received on the leg
interfacing with the initiator of the call hold, and replies
to this initiator with a SIP 200 OK response. However,
call retrieve (resume) requests received from the
initiator are forwarded to the remote side. The device
can play a held tone to the held party if the 'Play Held
Tone' parameter is set to Internal.
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Mediant 4000 SBC | User's Manual