AudioCodes Mediant 3000, User Manual

Page: 802 / 872

User's Manual 802 Document #: LTRT-89729
Mediant 3000
Parameter Description

The x in the ini file parameter name denotes the trunk number,
where 0 is Trunk 1.
[TransferCapabilityFor
DataCalls] Defines the ISDN Transfer Capability for data calls.

[0] = (Default) ISDN Transfer Capability for data calls is 64k
unrestricted (data).

[1] = ISDN Transfer Capability for data calls is determined according
to the ISDNTransferCapability parameter.
Web: ISDN Transfer On
Connect
EMS: Send ISDN
Transfer On Connect
[SendISDNTransferOn
Connect]
This parameter is used for the ECT/TBCT/RLT/Path Replacement ISDN
transfer methods. Usually, the device requests the PBX to connect an
incoming and outgoing call. This parameter determines if the outgoing
call (from the device to the PBX) must be connected before the transfer
is initiated.

[0] Alert = (Default) Enables ISDN Transfer if the outgoing call is in
Alerting or Connect state.

[1] Connect = Enables ISDN Transfer only if the outgoing call is in
Connect state.
Note: For RLT ISDN transfer (TrunkTransferMode = 2 and
ProtocolType = 14 DMS-100), this parameter must be set to 1.
[ISDNTransferComplet
eTimeout] Defines the timeout (in seconds) for determining ISDN call transfer
(ECT, RLT, or TBCT) failure. If the device does not receive any
response to an ISDN transfer attempt within this user-defined time, the
device identifies this as an ISDN transfer failure and subsequently
performs a hairpin TDM connection or sends a SIP NOTIFY message
with a SIP 603 response (depending whether hairpin is enabled or
disabled, using the parameter DisableFallbackTransferToTDM).
The valid range is 1 to 10. The default is 4.
Web/EMS: Enable
Network ISDN Transfer
[EnableNetworkISDNTr
ansfer]
Determines whether the device allows interworking of network-side
received ECT/TBCT Facility messages (NI2 TBCT - Two B-channel
Transfer and ETSI ECT - Explicit Call Transfer) to SIP REFER.

[0] Disable = Rejects ISDN transfer requests.

[1] Enable = (Default) The device sends a SIP REFER message to
the remote call party if ECT/TBCT Facility messages are received
from the ISDN side (e.g., from a PBX).
[DisableFallbackTransf
erToTDM] Enables "hairpin" TDM transfer upon ISDN (ECT, RLT, or TBCT) call
transfer failure. When this feature is enabled and an ISDN call transfer
failure occurs, the device sends a SIP NOTIFY message with a SIP 603
Decline response.

[0] = (Default) The device performs a hairpin TDM transfer upon
ISDN call transfer.

[1] = Hairpin TDM transfer is disabled.
Web: Enable QSIG
Transfer Update
[EnableQSIGTransferU
pdate]
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.