CHAPTER 5 OPERATION TEST
– 433 – NWA-008853-001 Rev.3.0
97ch5001.fm
STEP9: Repeat the procedure shown in STEP 2 and 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.
Interoffice Synchronization Test
This test checks to see if noise occurs while calling with the opposite office, by difference of the clock
signal frequency between the offices. Do the following steps using “In Service” transmission lines.
STEP1: Originate an outgoing call via trunks.
STEP2: Check the speech quality (if noise, distortion or click occurs during a few minutes) with the op-
posite office mutually.
STEP3: On the DTMF telephone set, keep pressing any dial button, and check to see if noise periodical-
ly occurs on the DTMF signals coming from the calling station in the opposite office.
STEP4: 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 steps using “In Service” transmission
lines.
STEP1: Confirm that the following switches on all the DTI/CCT cards mounted in PIM0 are set to
“OFF”.
• 30DTI/30CCT card: SW-1 and SW-2 to OFF
• 24DTI/24CCT card: SW0-1 and SW0-2 to OFF
STEP2: 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
PLO OPERATION TEST
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