Data Output
Serial binary. Complies with ITU-T V.28,
+
12 and –
12 volts nominal.
Output impedance 300 ohms.
Synchronisation
RTS/CTS delay dependent on modulation format.
Equaliser
Automatic adaptive equaliser.
Near and far end echo canceller.
Autodial – Autoanswer
Method
Pulse dial. 10 pps rate. Make period 33 msec.
Break period 67 msec (UK version).
Interdigit period 800 msec.
Tone dial. On time 101 msec. ID time 101 msec.
Duty cycle 50%.
Line Interface
600 ohm impedance.
Old and new dial tone detection.
Secondary dial tone detection for PABX use.
Progress tones and answer tone detection.
Autoanswer
ITU-T V.25 compliant.
Busy
Busy out via AT command or DTR.
Disconnect
Call cleared selectable on loss of DTR, and/or no
carrier for n seconds.
Test Functions
Local analogue loop or remote digital loop.
Test functions selectable via front panel switches,
AT commands or on pins 18 and 21 of the DTE.
Facilities
Command Sets
Extended AT command set. Asynchronous
commands entered via the separate command port.
V.25bis byte synchronous and HDLC. Synchronous
commands entered via the DTE interface.
Memory
Non-volatile memory.
12 preset factory, and 4 user defined configurations.
21 stored telephone numbers.
X450-310851 Issue 2
A-2
Rev.1
Summary of Contents for syncro 1496
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