Sendloopcode - HP 6600 Command Reference Manual

Usage guidelines
To display the value of the controller counter, use the display controller t1 command.
The reset counters interface command clears the counters of all interfaces. To clear the controller counter
of individual CT1 interfaces, use the reset counters controller t1 command.
Examples
# Clear the controller counter for CT1 interface T1 2/0/0.
<Sysname> reset counters controller t1 2/0/0

sendloopcode

Use sendloopcode to send remote loopback control code.
Syntax
sendloopcode { fdl-ansi-llb-down | fdl-ansi-llb-up | fdl-ansi-plb-down | fdl-ansi-plb-up |
fdl-att-plb-down | fdl-att-plb-up | inband-llb-down | inband-llb-up }
Default
No remote loopback control code is sent.
Views
CT1 interface view
Default command level
2: System level
Parameters
fdl-ansi-llb-down: Sends ANSI-compliant LLB deactivation request code in the FDL to remove loopback.
fdl-ansi-llb-up: Sends ANSI-compliant line loopback (LLB) activation request code in the FDL to start
remote loopback.
fdl-ansi-plb-down: Sends ANSI-compliant PLB deactivation request code in the FDL to remove loopback.
fdl-ansi-plb-up: Sends ANSI-compliant payload loopback (PLB) activation request code in the FDL to start
remote loopback.
fdl-att-plb-down: Sends AT&T-complaint PLB deactivation request code in the FDL to remove loopback.
fdl-att-plb-up: Sends AT&T-complaint PLB activation request code in the FDL to start remote loopback.
inband-llb-down: Sends in-band LLB deactivation request code in compliance with the ANSI or AT&T
implementation to remove loopback.
inband-llb-up: Sends in-band line loopback (LLB) activation request code compliant with the ANSI and
AT&T implementation to start remote loopback.
Usage guidelines
You may configure loopback on the remote CT1 interface by sending loopback request code.
In LLB mode, all 193 bits (one synchronization bit and 192 effective bandwidth bits) in a T1 PCM frame
are looped back. In PLB mode, however, only 192 effective bandwidth bits are looped back.
The format of loopback code is compliant with ANSI T1.403 or AT&T TR 54016.
In SF framing, LLB code is sent using the effective bandwidth. In ESF framing, both LLB code and PLB code
are sent and received in the FDL.
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