7705 SAR Interfaces
402
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
7 — specifies seven bits in a character
8 — specifies eight bits in a character
clock-source
Syntax clock-source {slave}
Context config>port>serial>rs232
config>port>serial>v35
config>port>serial>x21
Description This command configures the source of the transmit clock. This command is valid only if
device-mode is synchronous, and only the slave mode is supported.
Default slave
Parameters — see Table 27. See the device-gender command for information on setting DTE or
DCE on Serial Data Interface ports.
control-lead
Syntax control-lead {input | output}
Context config>port>serial>rs232
config>port>serial>v35
config>port>serial>x21
Description This command enables access to the context to configure the input and output leads that
carry control signals. Control signals provide the handshaking for call setup, teardown, and
synchronization.
Table 27 Synchronous Clocking Options
Attached Device
Gender
Circuit Gender Transmit
Clock Option
Description
DTE* DCE** DTE* DCE**
✓ ✓ Slave DCE slave — the transmit and receive clocks
are derived from the BRG locked to the system
timing
✓✓ Slave DTE slave — the transmit clock and the receive
clock are supplied by the attached DCE device
(this is the default mode)
* Data Terminal Equipment
** Data Communications Equipment
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