AudioCodes E-SBC User Manual

CHAPTER68 Configuration Parameters Reference
Mediant 1000 Gateway & E-SBC | User's Manual
Parameter Description
gateway digital
settings > isdn-
ignore-18x-without-
sdp
[ISDNIgnore18xWithoutSD
P]
Enables interworking SIP 18x without SDP and ISDN Q.931
Progress/Alerting messages.
■ [0] = Disable. Incoming SIP 18x messages without SDP are
replied by the device by PRACK (if required), but the device
doesn't interwork these SIP messages with Q.931 Progress
or Alerting messages (i.e., doesn't send to PSTN).
■ [1] = (Default) Enable. The device interworks 18x SIP
messages with Q.931 Progress and Alerting messages (if
required) and sends them to the PSTN.
gateway digital
settings > isdn-
send-progress-for-
te
[ISDNSendProgressForT
E]
Defines whether the device sends Q.931 Progress messages to
the ISDN trunk if the trunk is configured as User side (TE)
and/or Network (NT) side, for IP-to-Tel calls.
■ [0] = Disable. The device sends Progress messages to the
trunk only if the trunk is configured as NT.
■ [1] = (Default) Enable. The device sends Q.931 Progress
messages to the trunk if the trunk is configured as TE or NT.
Note: To configure the trunk's ISDN termination side (TE or
NT), use the 'ISDN Termination Side' parameter.
'Enable QSIG Transfer
Update'
qsig-xfer-update
[EnableQSIGTransferUpda
te]
Determines whether the device interworks QSIG Facility
messages with CallTranferComplete or CallTransferUpdate
invoke application protocol data units (APDU) to SIP UPDATE
messages with P-Asserted-Identity and optional Privacy
headers. This feature is supported for IP-to-Tel and Tel-to-IP
calls.
■ [0] Disable = (Default) Ignores QSIG Facility messages
with CallTranferComplete or CallTransferUpdate invokes.
■ [1] Enable
For example, assume A and C are PBX call parties and B is the
SIP IP phone:
1. A calls B; B answers the call.
2. A places B on hold and calls C; C answers the call.
3. A performs a call transfer (the transfer is done internally by
the PBX); B and C are connected to one another.
In the above example, the PBX updates B that it is now talking
with C. The PBX updates this by sending a QSIG Facility
message with CallTranferComplete invoke APDU. The device
interworks this message to a SIP UPDATE message containing
a P-Asserted-Identity header with the number and name derived
from the QSIG CallTranferComplete RedirectionNumber and
RedirectionName.
Note:
■ For IP-to-Tel calls, the RedirectionNumber and
RedirectionName in the CallTRansferComplete invoke is
derived from the P-Asserted-Identity and Privacy headers in
the received SIP INFO message.
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AudioCodes E-SBC Specifications

General

Brand	AudioCodes
Model	E-SBC
Category	Gateway
Language	English