AudioCodes Mediant 2000 User Manual page 333

SIP User's Manual
Parameter
Web: ISDN Transfer On Connect
EMS: Send ISDN Transfer On
Connect
[SendISDNTransferOnConnect]
[ISDNTransferCompleteTimeout]
[DisableFallbackTransferToTDM]
Web/EMS: ISDN SubAddress
Format
[ISDNSubAddressFormat]
Version 5.8
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 = Enables ISDN Transfer if the outgoing call is in
Alert or Connect state (default).

[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), the parameter
SendISDNTransferOnConnect must be set to 1.
Configuration 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.
Enables or disables "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] = device performs a hairpin TDM transfer upon ISDN
call transfer (default).

[1] = Hairpin TDM transfer is disabled.
Determines the encoding format of the SIP Tel URI parameter
'isub' that carries the encoding type of ISDN subaddresses.
This is used to identify different remote ISDN entities under
the same phone number - ISDN Calling and Called numbers)
for interworking between ISDN and SIP networks.

[0] = ASCII - IA5 format that allows up to 20 digits.
Indicates that the 'isub' parameter value needs to be
encoded using ASCII characters (default)

[1] = BCD (Binary Coded Decimal) - allows up to 40
characters (digits and letters). Indicates that the 'isub'
parameter value needs to be encoded using BCD when
translated to an ISDN message.

[2] = User Specified
For IP-to-Tel calls, if the incoming SIP INVITE message
includes subaddress values in the 'isub' parameter for the
Called Number (in the Request-URI) and/or the Calling
Number (in the From header), these values are mapped to the
outgoing ISDN Setup message.
If the incoming ISDN Setup message includes 'subaddress'
values for the Called Number and/or the Calling Number,
333
6. Configuration Parameters Reference
Description
October 2009