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CHAPTER 5 OPERATION TEST
PLO Operation Test
NEAX2000 IVS
2
ISDN System Manual
ND-70919 (E), Issue 1.0
Page 197
STEP 6: After an outgoing connection via trunks has been established, confirm interoffice
synchronization and speech quality with the procedure shown in STEP 3.
NOTE: If noise periodically occurs, replace the MP card after checking the switch settings on
the MP card, and do the above test again.
(2) When providing two clock supply routes
STEP 1: On the DTI/PRT/BRT cards extracting clock signals, set the switches as follows to
change the clock supply route from 0 to 1:
• 30DTI0 card: SW-1 to OFF, SW-2 to OFF
• 30DTI1 card: SW-1 to OFF, SW-2 to ON
• PRT0/24DTI0 card: SW0-1 to OFF, SW0-2 to OFF
• PRT1/24DTI1 card: SW0-1 to OFF, SW0-2 to ON
• BRT0 card: SW0-2 to OFF, SW0-3 to OFF
• BRT1 card: SW0-2 to ON, SW0-3 to OFF
• 2BRT0 card: SW11-2 to OFF, SW11-3 to OFF
• 2BRT1 card: SW11-2 to ON, SW11-3 to OFF
STEP 2: Originate an outgoing call via trunks.
STEP 3: After an outgoing connection via trunks 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.
STEP 4: On the DTI/PRT/BRT cards, set the switches as follows to stop the external clock
signal input:
• 30DTI0/1 card: SW-1 and SW-2 to OFF
• PRT0/1, 24DTI0/1 card: SW0-1 and SW0-2 to OFF
• BRT0/1 card: SW0-2 and SW0-3 to OFF
• 2BRT0/1 card: SW11-2 and SW11-3 to OFF
– The CLK lamp on the MP card goes out.
STEP 5: Repeat STEP 2 and STEP 3 of this procedure.