Nortel Networks 1000 - Manual (Page 673)

Operation 673
Incoming calls The far-end initiates calls as follows:
•
The ground is placed on the E lead in E and M signaling.
• Dial pulses are subsequently applied from the far-end as ground open
on the E lead.
• If the far-end is equipped for sending, the system can operate in any
mode (immediate start, delay dial, or wink start), as assigned on a start
arrangement basis. See
Table 244 "Operation Mode" (page 673) .
— In immediate start mode, there is no start signal from the called
office. The seizure signal (off hook supervisory state) from the
far-end should be at least 150 ms. At the end of the seizure signal,
the far-end can start pulsing after the standard delay (normally 70
ms minimum).
— In delay dial mode, a 256-384 ms off hook/on hook signal is
returned to the far-end immediately after receipt of the seizure
signal. When the far-end detects the on hook signal (start signal),
the far-end can start pulsing after the standard delay (normally 70
ms minimum).
— In wink start mode, within a 128–256 ms period after receipt of the
seizure signal from the far-end, the called office transmits a 250
ms, wink start, off hook/on hook signal to the calling office.
Table 244
Operation Mode
Operation mode Start arrangement
Immediate start IMM
Delay dial DDL
Wink start WNK
The far-end initiates calls as follows:
• Ground is placed on the E lead in E and M signaling.
•
Dial pulses are subsequently applied from the far-end as ground open
on the E lead.
• If the far-end is equipped for sending, the system may be operated in
any mode (immediate start, delay dial, or wink start), as assigned on a
start arrangement basis. See
Table 245 "Operation mode" (page 674) .
— In immediate start mode, there is no start signal from the called
office. The seizure signal (off hook supervisory state) from the
far-end should be at least 150 ms. At the end of the seizure signal,
Nortel Communication Server 1000
Circuit Card Reference
NN43001-311 02.06 Standard
27 August 2008
Copyright © 2003-2008 Nortel Networks
.