IPECS Release 5
Feature Description & Operation 5.0
4-6
4.8 DIAL PULSE SIGNALING
Description
An analog CO line will send dial pulse signals to the central office. If programmed as a pulse CO
line, the system will send open loop pulses at 10 pps with the assigned break/make ratio.
Operation
System
Operation of this feature is automatic when programmed.
Conditions
1. The break/make ratio is system programmable as 60/40 or 66/33.
Programming
CO/IP 1. CO Line Signal Type (PGM 141-Btn 5)
S
YSTEM 1. Pulse Dial Ratio (PGM 176)
2. Pause Timer (PGM 181-Btn 10)
Related Features
Dial Pulse to Tone Switchover
DTMF Signal Sending
Hardware
4.9 DIRECT INWARD DIAL (DID)
Description
A carrier service, known as Direct Inward Dial (DID), sends digits to the system so that the call
may be routed directly to a specific station or system facility. Digits sent to the system are
generally the last digits (3 or 4) dialed by the caller. DID service is available over analogue, digital,
and packet networks. Analogue DID lines are limited to one-way incoming service and require
special call-start signaling definition. ISDN lines can provide two-way, incoming DID and normal
outgoing service, and require no special signaling.
After collecting the digits from the carrier, iPECS converts the digits employing one of three DID
digit conversion Types:
Type 0 - collect incoming digits based on the programmed digit count and convert the digits
according to the DID conversion pattern, resulting in the DID destination number.
Type 1 - use the incoming DID digits as the destination number without converting.
Type 2 - Following the result of DID conversion Type 0, route the call according to the
Flexible DID table conversion.
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