7705 SAR Interfaces
494
Interface Configuration Guide
3HE 11011 AAAC TQZZA Edition: 01
Parameters abcd-code — the 4-bit ABCD value to be transmitted
Values 0 to 15 (can be entered in decimal, binary, or hexadecimal format)
line-balance
Syntax line-balance {nominal | 800}
Context config>port>voice
Description This command configures the line balance for the FXO or FXS voice interface on the 8-port
Voice & Teleprotection card, for the FXO voice interface on the 8-port FXO Adapter card, and
for the FXS voice interface on the 6-port FXS Adapter card.
Default nominal (for both FXS and FXO)
Parameters nominal — 600 Ω
800 — 800 Ω//(100 Ω+50 nF)
loopback
Syntax loopback {internal-analog | internal-digital}
no loopback
Context config>port>voice>em
config>port>voice>fxo
config>port>voice>fxs
Description This command puts the specified port or channel in loopback mode. The internal-digital
parameter is the only valid option for FXO and FXS.
The loopback command is not saved to the system configuration between boots.
The no form of this command disables the loopback.
Default no loopback
Parameters internal-analog — places the associated port or channel into an internal analog
loopback mode. The internal analog loopback resides in the CODEC, close to the line
side. It loops the outgoing analog signals back towards the system.
internal-digital — places the associated port or channel into an internal digital loopback
mode. The internal digital loopback resides in the CODEC, close to the system side.
It loops the outgoing frames back towards the system.
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