ADTRAN Express 3100, Руководство пользователя

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Chapter 3. Using the Express Configuration Program
3-12 Express 3100 User Manual 61200240L2-20
Data Call Type
Selects the Call Type according to the ISDN line configuration.
Data Over Voice
Allows data calls to be placed using a Speech Call Type. If a usage
charge for data exists in your area, you may benefit from this
option.
Call Routing
Specifies how the Express 3100 routes incoming voice calls. Op-
tions include the following:
Speech Directs call control software to request a Speech circuit
as the bearer capability for outgoing calls. Use with
ISDN lines configured for voice service. In some areas
voice service is less expensive than data service. A
Speech call type does not guarantee an end-to-end
digital connection with some local and long distance
carriers.
Audio Directs call control software to request a 3.1 kHz Au-
dio circuit as the bearer capability for outgoing calls.
Used with an ISDN line configured for voice service.
In some areas audio service is less expensive than data
service. An Audio call type does not guarantee an end-
to-end digital connection with some local and long
distance carriers.
Data 56kbps Directs call control software to request a 6 4kbps data
circuit that is rate-adapted down to 56 kbps.
Data 64kbps Instructs call control software to request an unrestrict-
ed 64 kbps data circuit. (Default for the Express 3100.)
All Calls to DTE Routes all calls to the EIA-232 port, regardless of
Call Type.
Speech Calls to
POTS Routes calls with a Speech call type to the POTS
ports. Calls with Data 56k, Data 64k, and Audio
are routed to the EIA-232 port.
Speech/Audio Calls
to POTS Routes calls with Speech and Audio call types to
the POTS ports. Calls with Data 56k and Data
64k are routed with the EIA-232 port.