Filter
Top Products
DEFINITYEnterpriseCommunicationsServerandSystem75andSystem85
Terminals and Adjuncts Reference
555-015-201
Issue 11
December 1999
ISDN Voice Terminals
17-47The ISDN 8520T Voice/Data Terminal
17
Data Features
The ISDN 8520T voice terminal has the following data features:
■ Asynchronous full-duplex operation at data rates from 1200 bits per second
(bps) to 57.6 kilobits per second (kbps) through an EIA-232 interface.
■ X.25 packet switched data communication including receipt of X.29
commands from a remote X.25 host for setting packet switched data
parameters.
■ Circuit switched data communication over 56 or 64 kbps facilities via
industry standard V.120 rate adaption protocol.
■ Circuit switched data communication over 64 kbps facilities via Lucent
Technologies’ Digital Multiplexed Interface Mode 2 or Mode 3 rate adaption
protocols.
■ API allows a PC to control all aspects of the set’s interaction with the user
and with the network.
■ The 10 softkeys and four display control buttons located to the left and right
of the liquid crystal display can be used to access data features such as
view current options, change options, answer a data call, place a data call,
reset a locked data set, and selecting to display a data indicator. Note, the
first two lines of the 7-line display contain switch information; the remaining
five lines contain softkey information.
■ A user-friendly command interface with on-screen help, nine
programmable named data memory numbers, and four programmable data
option profiles.
■ An expanded Hayes AT command set interface for compatibility with
applications which require this command format.
■ Remote and local loopback tests.
For more information about the data features on an 8500-Series terminal, see the
ISDN 8500 Series Display Terminal ADM User’s Manual
, 555-021-730.
Distance Limitations
For the DEFINITY G2 and G3 and the DEFINITY ECS, in which multipoint
configuration is used, the maximum signaling distance possible from the port
board to the work location jack is: (The terminating resistor should be within 250
feet of the work location; the distances listed are applicable for up to two
voice/data terminals.)
■ If 24 AWG cable is used = 1600 feet
■ If 26 AWG cable is used = 1330 feet