Start Dial Control; Immediate Start; Delay For Dial Tone; Wink Start - Avaya Communication Server 1000 Series Reference

No tones are provided during dialing other than a locally-generated dial tone following the trunk
access code.
Senderized mode limits flexibility. The main circuit switch must be programmed to determine
how many digits to collect before forwarding those digits to the node. Usually, no more than
12 digits can be collected and forwarded.

Start dial control

After a TIE Trunk is seized, digits of the dialed number are normally transmitted. The only
exception is a manual trunk, which rings a designated telephone when seized. However, most
terminating equipment requires a variable time interval to prepare for the reception of digits.
This time interval often depends on the switch's call-processing load. Therefore, a fixed delay
before sending digits is unreliable.
There are four common ways to handle start dial control:

• immediate start

• delay for dial tone

• wink start

• delay dial
Immediate start
Immediate start applies in those cases where a short fixed delay is required for the switch to
receive digits.
Delay for dial tone
A dial tone is provided when the switch is ready to receive digits.
Wink start
A momentary off-hook signal is sent when the terminating equipment is ready to receive
digits.
Electronic Switched Network Reference — Signaling and Transmission
Start dial control
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