6-16 Netopia ISDN Modem User’s Guide
Receiving data calls
The Netopia ISDN Modem can receive incoming circuit-switched
data calls from other Netopia ISDN Modems or from ISDN devices
and Switched 56 equipment.
■If you are using one B channel, and you receive a data call on
the number associated with the other B channel, the incoming
data call will ring through.
■If you are using one B channel, and you receive a data call on
the number associated with the B channel you are using, the
incoming data call will receive a busy signal unless your local
switch is an AT&T 5ESS switch. An AT&T 5ESS switch will let
the incoming data call roll over to the available B channel.
■If both B channels are in use, you cannot receive a data call.