CHAPTER 5 OPERATION TEST
– 430 –
NWA-008853-001 Rev.3.0
97ch5001.fm
PLO OPERATION TEST
To confirm the PLO operation, do the following tests.
• Clock Signal Generation Test
• Clock Signal Synchronization Test
To be tested when the PBX is a clock receiver office.
• Interoffice Synchronization Test
• Source Office Mode Test
To be tested when the PBX is a clock source office.
Clock Signal Generation Test
This test checks to see if the PLO keeps generating clock signals at the frequency of the last source clock,
when the source clock signals from network have stopped. Do the following steps using “In Service” trans-
mission lines.
STEP1:
On all the DTI/CCT cards mounted in PIM0, set the switches as follows to stop the external
clock signal input.
• 30DTI/30CCT card: SW-1 and SW-2 to OFF
• 24DTI/24CCT card: SW0-1 and SW0-2 to OFF
– The CLK lamp on the MP card goes out.
STEP2:
Originate an outgoing call via trunks.
STEP3:
After an outgoing connection via trunks has been established, confirm interoffice synchroniza-
tion 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 sta-
tion in the opposite office.
• Do the above test again in the opposite direction.
STEP4:
On all the DTI/CCT cards mounted in PIM0, restore the switches as the state before testing to
input the external clock signals.
– The CLK lamp on the MP card lights.
NOTE:
If noise periodically occurs, replace the MP card after checking the switch settings on the MP
card, and do the above test again.
PLO OPERATION TEST
Summary of Contents for UNIVERGE NEAX 2000 IPS
Page 1: ...NWA 008853 001 ISSUE 3 0 CCIS System Manual...
Page 14: ...vi NWA 008853 001 Rev 3 0 97toc001 fm THIS PAGE LEFT BLANK INTENTIONALLY...
Page 18: ...4 NWA 008853 001 Rev 3 0 97ch0001 fm THIS PAGE LEFT BLANK INTENTIONALLY...
Page 364: ...350 NWA 008853 001 Rev 3 0 97ch3005 fm THIS PAGE LEFT BLANK INTENTIONALLY JANUARY 31 2006...
