Digital Loopbacks; Analog Loopbacks - Paradyne 9161 Reference Manual

Digital Loopbacks

Analog Loopbacks

9161-A2-GH30-20
A Digital Loopback loops the digital voice signal received from the T1 interface
back to the same interface, just before reaching the D-to-A converter on the voice
port.
CODEC
D to A
Digital Loopback
Converter
to: T1 Interface
The following tests cannot be running when a digital loopback test is initiated:
Analog Loopback, DRS or Quiet Test Tone on the same port
An Analog Loopback loops the analog voice signal received from the T1 interface
back to the same interface, after passing through the Digital-to-Analog converter
and Analog-to-Digital converter on the voice port.
CODEC
D to A
Converter
to: T1 Interface
The following tests cannot be running when an Analog Loopback test is initiated:
DRS or Quiet Test Tone, or Digital or Line Loopback on the same port
September 1997
Troubleshooting and Maintenance
496-15200
Analog Loopback
496-15201
5-27