Integrated Services Digital Network (Isdn) - Digital Equipment 300 Series AXP Reference Manual

Integrated Services Digital Network (ISDN)

ISDN Not Yet
Available
Australian ISDN
Connections
ISDN
Capabilities
Use of ISDN B
Channels
Though your DEC 3000 Model 300 Series AXP system can
provide ISDN capabilities, it is not as yet agency approved and
available for your DEC 3000 Model 300 Series AXP system.
When your system is shipped, a foam block covers the ISDN port
on the back of the system unit.
Once agency approval of ISDN for the DEC 3000 Model 300
Series AXP systems is granted, you will be contacted by your
Digital sales representative to inform you of ISDN certification.
When you are ready to install ISDN hardware, you must request
your Digital service representative install the required hardware.
The following information explains the ISDN capabilities for
your DEC 3000 Model 300 Series AXP system pending license
approval.
The ISDN interface in this equipment has not completed
Australian ISDN network connection certification testing and
as such does not have an AUSTEL permit for connection. In
Australia, it is an offense to connect nonpermitted devices to a
public telecommunications network and may attract a fine of up
to $12,000.
ISDN is a digital telecommunications network, providing
connectivity for voice and data applications.
Your DEC 3000 Model 300 Series AXP system includes an ISDN
Basic Rate S/T interface, which includes:
• Two 64 kilobits per second B channels for voice and data
transmission
• One 16 kilobits per second D channel for signaling and
control
The B channels can be used for digitized voice, circuit-switched
data at up to 64 kilobits per second, or packet-switched data
transmission.
Integrated Services Digital Network (ISDN)
1–11