Summit & Summit 800
Feature Description and Operation Manual
Issue 1.2
330
4.14.4 Multiple Subscriber Number (MSN)
Description
Up to eight (8) Subscriber Numbers (telephone numbers) can be served by a Basic Rate
Interface allowing Direct-Dial-In call delivery. This “Sub-Address” information is included as digits
in the Called Party Number Information Element.
When the MSN or Sub-address information is received, the system references the MSN Table for
an index to the Flexible DID Table, which determines call routing. If no index to Flexible DID
Table is assigned then the call routes to all stations that have an idle
{MSN}
button corresponding
to the MSN Telephone Number received or to a button for the outside Line. If none is available,
the call routes employing the DID/DISA Destination (PGM 167).
The system will use the MSN number when a call is received using an MSN button on ISDN or
SIP Lines.
Operation
System
Operation of the MSN feature is automatic when configured.
iPECS IP & LDP Phones
To program an {MSN} button;
[TRANS/PGM]
+
{FLEX}
+
[TRANS/PGM]
+ “85” + “#” ’+ MSN
[HOLD/SAVE]
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 outside Line entry as a quick look-up reference. If the
Line number is programmed in the MSN Table, then only those entries with the Line
number are searched, otherwise the entire MSN Table is searched for a match to the
Called Party Number.
3. When assigning an
{MSN}
button the “MSN digits” should match one of the MSN
Table entries. To assign an MSN button on the phone, the MSN number must exist in
the system MSN Table.
4. An MSN loop button is overwritten by an individual CO line button, if it is exist. On the
other hand, an MSN loop button is not overwritten by CO Group button.
5. Multiple duplicate
{MSN LOOP}
buttons can be assigned on an iPECS IP or LDP
Phone.
6. If enabled in SMDR, the MSN number is output as the Account code for outgoing calls
employing an MSN button.
7. MSN Call Wait can be assigned to deliver the call to a busy station. If not assigned, the
call is routed using the DID/DISA Destination (PGM 167) or is disconnected.