User's Manual 1248 Document #: LTRT-10632
Mediant 800B Gateway & E-SBC
Parameter Description
during the first 5 seconds, the device sends a SIP NOTIFY with
200 OK message; otherwise, the device sends a NOTIFY with 4xx
message.
[6] = Supports AT&T toll free out-of-band blind transfer for trunks
configured with the 4ESS ISDN protocol. AT&T courtesy transfer
is a supplementary service which enables a user (e.g., user "A") to
transform an established call between it and user "B" into a new
call between users "B" and "C", whereby user "A" does not have a
call established with user "C" prior to call transfer. The device
handles this feature as follows:
IP-to-Tel (user side): When a SIP REFER message is
received, the device initiates a transfer by sending a Facility
message to the PBX.
Tel-to-IP (network side): When a Facility message initiating an
out-of-
band blind transfer is received from the PBX, the device
sends a SIP REFER message to the IP side (if the
EnableNetworkISDNTransfer parameter is set to 1).
Note: To configure trunk transfer mode per trunk, use the parameter
TrunkTransferMode_x.
[TrunkTransferMode_x] Determines the trunk transfer mode per trunk (where x denotes the
Trunk number). To configure trunk transfer mode for all trunks and for
a description of the parameter options, refer to the parameter
TrunkTransferMode.
[EnableTransferAcrossTrunk
Groups]
Determines whether the device allows ISDN ECT, RLT or TBCT IP-
to-Tel call transfers between B-channels of different Trunk Groups.
[0] = (Default) Disable - ISDN call transfer is only between B-
channels of the same Trunk Group.
[1] = Enable - the device performs ISDN transfer between any two
PSTN calls (between any Trunk Group) handled by the device.
Note: The ISDN transfer also requires that you configure the
parameter TrunkTransferMode_x to 2.
ISDN Transfer Capabilities
configure voip > interface e1-
t1|bri > isdn-xfer-cab
[ISDNTransferCapability_x]
Defines the IP-to-ISDN Transfer Capa
bility of the Bearer Capability IE
in ISDN Setup messages, per trunk (where the x in the ini file
parameter name denotes the trunk number and where 0 is Trunk 1).
[-1] Not Configured
[0] Audio 3.1 (default)
[1] Speech
[2] Data
[3] Audio 7
Note: If the parameter is not configured or set to -1, Audio 3.1
capability is used.
[TransferCapabilityForDataCa
lls]
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.
ISDN Transfer On Connect
isdn-trsfr-on-conn
[SendISDNTransferOnConne
ct]
The 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. The parameter determines if
the outgoing call (from the device to the PBX) must be connected
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