User`s guide

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Finally, you must ensure that there are no conflicts with other protocols configured to
answer on other ASY ports. This can be done by disabling answering for the other
ports/protocols or by using the MSN and/or Sub-address parameters to selectively answer
calls to different telephone numbers using different protocols.
For example, if you have subscribed to the ISDN MSN facility, you may have been allocated
say four telephone numbers ending in 4, 5, 6 and 7. You could then set the MSN parameter
for the appropriate V.120 instance to 4 to configure V.120 to answer only incoming calls to
the MSN number ending in 4.
You should check that if PPP answering is enabled you have NOT selected the same MSN
and Sub-address values for PPP. If they are the same, V.120 will answer the call ONLY if S0
is set to 1. Otherwise, PPP will take priority and answer the call.