AudioCodes Mediant 1000 User Manual page 415

User's Manual
Parameter
SBC Hold
Remote Hold Format
remote-hold-Format
[IPProfile_SBCRemoteHoldFo
rmat]
Reliable Held Tone Source
reliable-heldtone-source
[IPProfile_ReliableHoldToneS
ource]
Version 7.2
(i.e.,transparent handling).

[1] Database URL = The device changes the Contact header so
that the re-route request is sent through the device. The device
changes the URI in the Contact header of the received SIP 3xx
response to its own URI and adds a special user prefix
("T~&R_"), which is then sent to the FEU. The FEU then sends a
new INVITE to the device, which the device then sends to the
correct destination.

[2] Handle Locally = The device handles SIP 3xx responses on
behalf of the dialog-initiating UA and retries the request (e.g.,
INVITE) using one or more alternative URIs included in the 3xx
response. The device sends the new request to the alternative
destination according to the IP-to-IP Routing table (the 'Call
Trigger' field must be set to 3xx).
Note:

When the parameter is changed from 1 to 0, new 3xx Contact
headers remain unchanged. However, requests with the special
prefix continue using the device's database to locate the new
destination.

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 re-INVITE 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 = Used when remote side cannot identify a call-
hold message. The device terminates the received call-hold
message (re-INVITE / UPDATE) and sends a 200 OK to the
initiator of the call hold. The device plays a held tone to the held
party if the 'SBC Play Held Tone' parameter is set to Yes.
Enables the device to consider the received call-hold request (re-
INVITE/UPDATE) with SDP containing 'a=sendonly', as genuine.

[0] No = (Default) Even if the received SDP contains 'a=sendonly',
the device plays a held tone to the held party. This is useful in
cases where the initiator of the call hold does not support the
generation of held tones.

[1] Yes = If the received SDP contains 'a=sendonly', the device
415
19. Coders and Profiles
Description
Mediant 1000B Gateway & E-SBC