Integrated Services Digital Network (Isdn) - DEC 3000 500 Owner's Manual

Integrated Services Digital Network (ISDN)

Note: ISDN Not Though your DEC 3000 Model 500/500S AXP system can provide
Yet Available ISDN capabilities, they are not yet agency approved or available.
Currently, a plug has been placed in the ISDN port pending
approval of ISDN licenses. Once agency approval of ISDN for
the DEC 3000 Model 500/500S AXP system has been granted,
you will be contacted by your Digital sales representative to
inform you of the ISDN certification. At that point, you must
remove the plug from the ISDN port before connecting the ISDN
network.
The following information explains the ISDN capabilities for
your DEC 3000 Model 500/500S AXP system pending license
approval.
ISDN ISDN is a digital telecommunications network, providing
connectivity for voice and data applications.
Capabilities
Your DEC 3000 Model 500/500S AXP system includes an ISDN
Basic Rate S/T interface, which includes:
•
•
Use of ISDN B The B channels can be used for digitized voice and circuit-
Channels switched data transmission at up to 64 kilobits per second, or for
packet-switched data transmission.
The D channel uses a protocol standardized by the International
Use of ISDN D
Channels Telegraph and Telephone Consultative Commiittee (CCITT) for
setting up these connections. The D channel can also be used for
low-speed packet transmission.
Integrated Services Digital Network (ISDN)
two 64 kilobits per second B channels
one 16 kilobits per second D channel
Introduction to Your System 1–11