ZyXEL Communications IP PBX X6004 - Manual (Page 240)

Chapter 13 Authority Group
X6004 User’s Guide
240
13.3.16.1 MSN
An MSN (Multiple Subscribe Number) is a phone line extension number that allows
you to associate multiple phone numbers with an ISDN BRI line. You can configure
two MSNs for each BRI line on the X6004. See the following example.
In the following example, two ISDN phones are connected to a single ISDN BRI
port. Each phone has a unique MSN. These MSNs must correspond to those
configured on the X6004. The phone A only answers the call dialing to 5555.
Figure 112 Using MSNs for Extensions
Note: You should define the same extension number(s) in the connected ISDN
phones. Otherwise, you cannot receive any calls.
Description Type a brief description for this BRI extension. This field can be 0-63
alphanumeric characters (A-Z, a-z, 0-9), underscores (_), hyphens (-)
and spaces. 0 means this field can be left blank.
Apply Click Apply to save your changes.
Cancel Click Cancel to go back to Authority Group configuration page
without saving your changes.
Table 66 Add a BRI Extension (continued)
LABEL DESCRIPTION
Table 67 MSN Example
INTERFACE /
PORT
MSN
MAPPING EXTENSION
NUMBER
BRI / Port 1 1 5555
2 6666
BRI / Port 2 1 7777
2 8888
...
6666
5555
ISDN BRI
5555 or 6666 MSN1: 5555
MSN2: 6666
A