Diagnostics

Testing FXO and FXS ports

Figure 5-2. Data port loopbacks

T1 Network

Receive

Transmit

 

 

LIU

 

FRAMER

 

CPU

Receive

Transmit

CPE Device

T1 Network

Receive

Transmit

 

LIU

 

FRAMER

 

CPU

Receive

Transmit

CPE Device

Network or Remote Loopback

Local Loopback

The selected DS0s are looped back after leaving the Framer and upon reaching the CPU. The CPU is used to control this loopback via the TSA. Subsystems T1 Line Interface Unit, T1 Framer, and CPU are exercised.

The Data Port interface signal is looped inside the CPU and returned to the data port interface. Subsystems CPU and the Data Port Interface are exercised.

To activate a data port loopback, use the following command:

user> SET DPCFG:LOOPBACK:1:(LINE/LOCAL)

To de-activate a data port loopback, use the following command:

user> SET DPCFG:LOOPBACK:1:OFF

5.4Testing FXO and FXS ports

The Z-Plex unit provides the following testing capabilities for FXO and FXS ports:

Zhone Technologies / 5-5

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Zhone Technologies Z-PLEX-10-24-DOC-SC manual Diagnostics Testing FXO and FXS ports

Z-PLEX-10-24-DOC-SC specifications

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