Chapter 11 Voice
•They configure their MSN mappings in the ZyXEL Device’s VoIP > Fixed Line Numbers screen. Carol maps MSN1 to “333” and David maps MSN2 to “222”.
•They then configure the VoIP > Phone > Analog Phone screen so that the PHONE 1 port uses the ISDN line and MSN1 to make and receive calls, and the PHONE 2 port uses the ISDN line and MSN2 to make and receive calls.
When someone calls 987654333, only Carol’s phone rings, and when someone calls 987654222 only David’s phone rings.
"You must enter a prefix number in your phone’s keypad if you want to make outgoing ISDN calls. Use the VoIP > ISDN Line screen to configure this prefix number (see Section 11.22 on page 207).
11.23.2 Receiving Analog Calls With Digital PhonesThe ZyXEL Device enables you to receive analog (PSTN) calls with a digital (ISDN) phone as follows.
1Connect an ISDN phone to the ISDN PHONE port.
2Click VoIP > Fixed Line Numbers.
3In the PSTN section, enter a number in the Number field (15 digits or fewer, no spaces or dashes allowed). This number must be different from any MSNs you configure in this screen. Click Apply.
4On your ISDN phone, set the same number that you configured in the Number field as the MSN. Refer to the documentation supplied by your phone’s manufacturer for details.
Now, when your ZyXEL Device receives an analog (PSTN) call, your ISDN phone rings.
11.23.3 Configuring the Fixed Line Numbers ScreenClick VoIP > Fixed Line Numbers. The following screen displays.
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