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Procedure 19-3 To set the device gender
where pp is 1 or 9, and c is 1
* Default
19.5
Duplex method
Data circuits support two duplex modes:
•
half-duplex
•
full-duplex
Half-duplex transmission uses a single transmission path. Two connected devices
can transmit and receive, but not at the same time. If you select half duplex, the
RTS/CTS delay option can be configured (described in section 19.6).
Full-duplex transmission uses two independent transmission paths, one in each
direction, allowing two connected devices to transmit and receive data
simultaneously.
X.21 circuits
The duplex method is not configurable for X.21 DCMs; it is set to full-duplex
automatically.
V.35 circuits
The duplex method is configurable except when a circuit is configured for a
multidrop data bridge (see section 19.10), in which case the duplex method is the
automatically changed to full-duplex for a multidrop master circuit or half-duplex for
a multidrop slave circuit.
2902 MainStreet Technical Practices
May 2002
90-2906-01
CONFIG — CIRCUIT — <pp-c> ↵ — FUNCTION — I/F_MODE
19 — X.21 and V.35 DCMs
DCE*/DTE
SK000496
19-5
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