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CHAPTER 5 OPERATION TEST
PLO Operation Test
NEAX2000 IVS
2
ISDN System Manual
ND-70919 (E), Issue 1.0
Page 199
STEP 4: Do the above test again in the opposite direction.
NOTE: If noise periodically occurs, replace the MP card after checking the switch settings on
the MP card, and do the above test again.
Source Office Mode Test
When the PBX is operated as a clock source office, do the following procedure using “In Service”
transmission lines.
STEP 1: Confirm that the following switches on all the DTI/PRT/BRT cards mounted in PIM0 are
set to OFF:
• 30DTI card: SW-1 and SW-2 to OFF
• PRT/24DTI card: SW0-1 and SW0-2 to OFF
• BRT card: SW0-2 and SW0-3 to OFF
• 2BRT card: SW11-2 and SW11-3 to OFF
STEP 2: Confirm the following switches on the MP card are set to OFF:
• SW2-2 and SW2-3 to OFF
• SW4-2 and SW4-3 to OFF
STEP 3: Confirm indication lamps on the MP card.
NOTE: When the CLK lamp lights on the MP card, the clock signal is not generated from the
MP card. Check the switch settings on the DTI, PRT, BRT and MP card. For details of
the lamp indications, refer to CHAPTER 4.
STEP 4: Originate an outgoing call via trunks.
STEP 5: After an outgoing connection via trunk has been established, confirm interoffice
synchronization and speech quality as follows:
• On the DTMF telephone set, keep pressing any dial button.
• Check to see if noise periodically occurs on the DTMF signals coming from the
calling station in the opposite office.
• Do the above test again in the opposite direction.
NOTE: If noise periodically occurs, replace the MP card after checking the switch settings on
the DTI/PRT/BRT and MP card, and do the above test again.