ADTRAN 1200300L1, Руководство пользователя

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Chapter 3. Operation
3-12 FXS+ Quad & Dual Voice Option Module User Manual 61200300L1-1
DNIS DELAY
The option allows the FXS+ to be used in applications such as
automatic voice mail or paging systems with telephone
interfaces for POTS lines, which need to receive routing
information supplied from the Central Office (CO).
The FXS+ is placed in TANDEM_LS or TANDEM_GS mode
as required by the Customer Premises Equipment (CPE).
Supervision must be set to
WINK mode. Signalling
conversion between the DID protocol expected by the CO
and POTS signalling on the 2-wire interface is made by the
FXS+.
After the CO seizes the trunk, the FXS+ waits for the CPE to
go off-hook and then sends a wink. After the wink, the FXS+
waits for the amount of time set by DNIS delay, then sends
answer supervision toward the CO.
The CPE must be able to answer calls within a carrier-
specified time (usually 5 seconds), receive digits immediately
on answer, and route calls to their destinations within the
time set by DNIS delay.
Choices: Disabled, 0.5 sec, 1.0 sec., 1.5 sec. 2.0 sec., 2.5 sec., 3.0
sec., and 5.0 sec.
DNIS WINK T/O (DNIS Wink Timeout)
When DNIS DELAY and DNIS WINK T/O are both enabled,
the FXS+ option module winks to Telco if the equipment
connected to the 2W does not answer within 5 seconds to an
incoming call. The wink timeout feature ensures that Telco
will always see a response from the CPE, even if there is no
answer. If this option is left disabled, the FXS+ option module
will not wink until the incoming call is answered.
Choices: Enabled, Disabled