User`s guide

Table Of Contents
Pipeline 75 Voice Features
How incoming voice calls are handled
A-6 Preliminary January 30, 1998 Pipeline User’s Guide
If both B channels are used for a data call to the same location, you can
receive a voice call to either telephone number. The Pipeline automatically
borrows one B channel for the voice call, and the call is routed to the analog
port assigned to the telephone number.
Exceptions: AT&T Custom Multipoint service and AT&T Custom
Point-to-Point service do not support channel borrowing for incoming
calls. With these services, callers receive a busy signal whenever both B
channels are in use.
If both B channels are used for any other combination of calls—for two
voice calls, for one voice call and one data call, or for two data calls to
different locations—the Pipeline cannot handle another voice call, and
callers to either telephone number receive a busy signal.
Incoming voice calls are handled differently with AT&T Custom Point-to-Point
service. Because this service includes only one telephone number, it can handle
only one voice call at a time.
If a single B channel is currently used for a data call, you can receive a voice
call. The call is routed to the Phone 1 port.
If a B channel is currently used for a voice call, a caller to the telephone
number receives a busy signal.
If both B channels are in use, a caller to the telephone number receives a
busy signal.
Caller ID supported
The number of the calling party is included in the ISDN BRI data stream. You
can capture the number, unless the caller has blocked it, by attaching a CallerID
device to the POTS ports on the unit.
You can block the outgoing Caller ID information by setting the Caller ID
parameter on the Configure menu to No. The setting applies to both POTS ports.
Using Call Waiting
The Pipeline supports Call Waiting, a feature that generates a distinctive tone
when you are using a telephone number for a voice call and another voice call is
made to the same telephone number. The Call Waiting tone, which is generated