Version 7.2  979  Mediant 1000B Gateway & E-SBC 
 
User's Manual   62. Analog Line Testing 
 
62  Analog Line Testing 
62.1  FXS Line Testing 
You can test FXS telephone lines that are connected to the device's FXS ports. The test is 
done per FXS port and FXS country coefficient type - USA (70) or TBR21 (66). The output 
of the test displays various line statuses and electrical line measurements. Some of the 
supported FXS status and line measurements include: 
  Hazardous Potential Tests (HPT) - hazardous AC or DC voltage is present on the tip 
and ring or both. 
  Foreign Electromotive Force Tests (FEMT) - foreign voltage is present on the tip, ring 
or both  
  Resistive Fault Tests (RFT) - tip or ring is shorted to ground, or they are shorted to 
each other  
  Receiver Off-hook Tests (ROH) - one or more phones are off hook on phone line 
during test.  
  Ringer Impedance Tests (RIT) 
  AC/DC line voltage 
  AC/DC line current 
  Line resistance 
  Line capacity 
  Hook status (on or off) 
  Message Waiting Indication (MWI) status (on or off) 
  Ring status (on or off) 
  Reversal polarity status (on or off) 
 
The FXS line test is currently supported only through CLI. 
 
 
Note:  FXS line testing is supported only by the FXS module type that supports 
outdoor FXS cabling. 
 
  To run the FXS line test: 
1.  Access the VoIP command set: 
# configure voip 
2.  Access the FXS interface command set: 
(config-voip)# interface fxs-fxo 
3.  Type the following command: 
(fxs-fxo)# fxs-line-testing < Module/Port > {66|70} 
For example, to test FXS port 4 on FXS module 1 with coefficient type USA: 
(fxs-fxo)# fxs-line-testing 1/4 70