Nortel BayStack 820, Installation And Reference Manual

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Using the Voice Adapter
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You can also append an extension number to a dialed phone number. If a
BayStack 820 ISDN Router and any device that supports this “subaddressing”
feature calls the other using this feature (by first dialing the main telephone
number, then pressing “*” followed by the extension number), the call is routed
directly to the corresponding extension. For example, if a remote caller with an
ISDN phone dials your ISDN number followed by a “*” and the extension number
for port A, only the phone that is connected to port A rings.
To configure direct calling options:
1.
Choose Configuration > WAN Interfaces > Voice Adapter.
The Port Configuration, Voice Adapter dialog box (Figure 7-1) opens.
Figure 7-1. Port Configuration, Voice Adapter Dialog Box
2.
Use the information in Table 7-1 to configure the voice port settings and
then click APPLY.