IPECS Release 5
Feature Description & Operation 5.0
4-18
Conditions
1. If the Called Party Number from the ISDN does not match an MSN Table entry, the received
digits are treated as defined for DID calls to determine an index to the Flexible DID Table.
2. The MSN Table employs the CO Line entry as a quick look-up reference. If the CO line
number is programmed in the MSN Table, then only those entries with the CO line number
are searched, otherwise the entire MSN Table is searched for a match to the Called Party
Number.
3. When programs {MSN loop button} the ‘MSN digits’ should be matched to one entries of
MSN pool. The button references an index of MSN entries.
4. MSN loop button is overwritten by a individual CO line button if it is exist. On the other hand,
MSN loop button is not overwritten by CO Group button.
Programming
STATION 1. MSN Wait (PGM 114-Btn 12)
2. Flexible Button Assignment (PGM 115)
CO/IP Lines 1. CO/IP Attributes III (PGM 143)
ISDN/ICLID 1. ISDN Attributes – I (PGM 200)
2. MSN Table (PGM 202)
Related Features
Direct Inward Dial (DID)
Hardware
ISDN gateway Module
4.16 ISDN SUPPLEMENTARY SERVICES
In many cases, the ISDN service provider offers enhanced services, to which a user may
subscribe. The iPECS system allows access to these ISDN “Supplementary Services”
implemented under the ETSI regime as described below.
4.16.1 ISDN Call Deflection
Description
When the ISDN Supplementary Service “Call Deflection” is supported, a user can forward
incoming calls on the ISDN line directly through the ISDN without the need to establish a
connection through the system.
When Call Deflection is used, the system sends a call-deflection request message with the
telephone number to receive the call to the ISDN. The ISDN then sends incoming calls to the
desired telephone number. In this case, the system does not set-up a CO line to CO line
(Unsupervised Conference) connection for the call.
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