363-206-305 Detailed Level Procedures:
Issue 3, June 2000 Page 1 of 6
DDM-2000 F
IBER
R
EACH
N
ARROWBAND
S
HELF
DLP-512
End-to-End Testing
Summary:
At CO equipment, determine channel and directory number of channel being tested.
At DDM-2000 NBS, determine corresponding channel. At NBS, connect a test
telephone set with ringer connected for bridged ringing to channel being tested. Make
talking, dialing, ringing, and ring-trip tests on at least one channel per NBS.
1. Establish communication between craft personnel at the NBS and CO.
2. At the CO equipment, select a channel slot to be tested and determine/assign
directory number of channel. Inform craft personnel at the NBS of channel
selected.
3.
NOTE:
Test telephone set should be connected for bridged ringing. Test calls
should be made from protector block.
At NBS, install a single-party channel unit (
SPQ
400/440) into the channel unit
slot that coincides with the channel being tested and temporarily connect a
test telephone set to the channel.
Response: CO test line and NBS telephone are connected.
4. At NBS, lift handset and check for dial tone.
5. Is dial tone present at NBS?
6. Request CO personnel to review line assignment to ensure correct test
number. If line assignment is correct, check test connections at NBS and
correct if needed. If dial tone is still not present, replace NBS channel unit and
check for dial tone.
If YES, proceed to Step 9.
If NO, continue with Step 6.
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