AudioCodes Mediant 2000 User Manual page 320

Parameter
Web/EMS: D-channel
Configuration
[DChConfig_x]
Web: NFAS Interface ID
EMS: ISDN NFAS Interface ID
[ISDNNFASInterfaceID_x]
Web: Enable Receiving of
Overlap Dialing
[ISDNRxOverlap_x]
[ISDNRxOverlap]
Web: PI For Setup Message
[PIForSetupMsg]
SIP User's Manual
Defines primary, backup (optional), and B-channels only, per trunk
(where x represents the Trunk ID).

[0] PRIMARY= Primary Trunk (default) - contains a D-channel
that is used for signaling.

[1] BACKUP = Backup Trunk - contains a backup D-channel
that is used if the primary D-channel fails.

[2] NFAS = NFAS Trunk - contains only 24 B-channels, without
a signaling D-channel.
Note: This parameter is applicable only to T1 ISDN protocols.
Defines a different Interface ID for each T1 trunk (where x denotes
the trunk ID).
The valid range is 0 to 100. The default interface ID equals the
trunk's ID.
Notes:

To set the NFAS interface ID, configure ISDNIBehavior_x to
include '512' feature per T1 trunk.

For a detailed description on NFAS, refer to ISDN Non-Facility
Associated Signaling (NFAS) on page 477.
Enables Rx ISDN overlap per trunk ID.

[0] Disable = Disabled (default).

[1] Enable = Enabled.
Notes:

If enabled, the device receives ISDN called number that is sent
in the 'Overlap' mode.

The Setup message to IP is sent only after the number
(including the Sending Complete IE) is fully received (via Setup
and/or subsequent INFO Q.931 messages).

The MaxDigits parameter can be used to limit the length of the
collected number for device ISDN overlap dialing (if sending
complete is not received).

If a digit map pattern is defined (DigitMapping), the device
collects digits until a match is found (e.g., for closed numbering
schemes) or until a timer expires (e.g., for open numbering
schemes). If a match is found (or the timer expires), the digit
collection process is terminated even if Sending Complete
wasn't received.

For detailed information on ISDN overlap dialing, refer to ISDN
Overlap Dialing on page 476.
Same as the description for parameter ISDNRxOverlap_x, but for
all trunks.
Determines whether and which Progress Indicator (PI) information
element (IE) is added to the sent ISDN Setup message. Some
ISDN protocols such as NI-2 or Euro ISDN can optionally contain
PI = 1 or PI = 3 in the Setup message.

[0] = PI is not added (default).

[1] = PI 1 is added to a sent ISDN Setup message - call is not
end-to-end ISDN.

[3] = PI 3 is added to a sent ISDN Setup message - calling
320
Description
Document #: LTRT-68809
Mediant 2000