Configure Bri Extensions: The Basic Screen - ZyXEL Communications X6004 User Manual

Chapter 13 Authority Group
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.
Table 56 MSN Example
INTERFACE / PORT
BRI / Port 1
BRI / Port 2
...
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 160 Using MSNs for Extensions
5555
6666
You should define the same extension number(s) in the connected ISDN
phones. Otherwise, you cannot receive any calls.

13.3.17 Configure BRI Extensions: the Basic Screen

After you create BRI extensions you can click on the Edit button in the Authority Group
configuration screen to configure further settings associated with the extensions. The Basic
screen for an BRI extension appears as shown.
180
MSN MAPPING EXTENSION NUMBER
1 5555
2 6666
1 7777
2 8888
A
ISDN BRI
5555 or 6666
MSN1: 5555
MSN2: 6666
X6004 User's Guide