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NEAX2000 IVS
2
ISDN System Manual
Page 190 ND-70919 (E), Issue 1.0
CHAPTER 5 OPERATION TEST
Interoffice Transmission Line Test
INTEROFFICE TRANSMISSION LINE TEST
To confirm inter-office synchronization and speech quality using “In-Service” transmission lines,
do the following procedure:
STEP 1: Connect the transmission line to the MDF or CONN card.
STEP 2: Make busy the channels except the channel tested by CME5.
STEP 3: Confirm indication lamps on the DTI/PRT/BRT card, as per the following table.
• Alarm Indications on 24DTI (Tabl e 5-1 )
• Alarm Indications on 30DTI (Tabl e 5-2 )
• Alarm Indications on 24PRT (Table 5-3)
• Alarm Indications on BRT (Ta ble 5-4 )
STEP 4: Originate an outgoing call via trunk.
STEP 5: After an outgoing connection via trunks has been established, confirm inter-office
synchronization as follows:
• On the DTMF telephone set, keep pressing any dial button.
• Check to see if there are noise or abnormal tones.
• Do the above test again in the opposite direction.
STEP 6: Repeat the test for all channels. When completed, make idle all channels by CME5.