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Test Telephones and Other Equipment
10-4 Issue 1 September 1995
10. Dial the trunk access code. Dial tone is heard.
11. Dial a listed directory number (LDN) for a working telephone. Ringback is
heard through the earpiece of the test telephone.
12. At the called telephone, pick up the receiver. Conversation must be
satisfactory.
13. Hang up both telephones.
14. Select a working telephone associated with a line port in the Expansion
Port Network (EPN) as the test telephone and lift the receiver. Dial tone is
heard.
15. Dial the extension number of a working telephone associated with a line
port in the Expansion Port Network (EPN) cabinet. Ringback is heard
through the earpiece of the test telephone.
16. At the called telephone, answer the call. Conversation must be
satisfactory.
17. Hang up both telephones.
18. At the test telephone, pick up the receiver.
19. Dial the extension number of a working telephone associated with a line
port in the Processor Port Network (PPN). Ringback is heard through the
earpiece of the test telephone.
20. At the called telephone, pick up the receiver. Conversation is satisfactory;
hang up the receiver at both telephones.
21. At the test telephone, pick up the receiver. Dial tone is heard.
22. Dial the trunk access code. Dial tone is heard.
23. Dial the listed directory number (LDN) for a working telephone. Ringback
is heard through the earpiece of the test telephone.
24. At the called telephone, pick up the receiver. Conversation must be
satisfactory.
25. Hang up both telephones.
Make Test Calls (Three-Cabinet
Switch)
Description
To test a three-cabinet switch, make the following calls:
■ Make a call from a telephone associated with a line port in the Processor
Port Network (PPN) to a telephone associated with a line port in the
Processor Port Network (PPN) .