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CHAPTER 5 ND-71548 (E)
Page 360
Issue 2
INSTALLATION TEST PROCEDURE
For the PBX, PADs can be set according to the connecting status of the Tie Line involved.
(a) For an outgoing/incoming call via a Tie Line:
• Via MAT command “ARTD” and switch settings on the TLT circuit card.
(b) For a tandem Tie Line connection:
• Via command “APAD” or switch settings on the TLT circuit card(s).
At both the originating and terminating offices, an 8 dB PAD is set for the EMT route via “ARTD” command or
switch settings. At the tandem office, a 4 dB PAD is set for the terminating and originating sides of each EMT route
via command “APAD”.
Through this arrangement, an 8 dB PAD is in service for outgoing and incoming connections, and 4 dB PADs are in
service for each line in a tandem connection (total: 8 dB). This arrangement is shown in Figure 049-1.
Figure 049-1 Example of PAD Setting
NAP-200-049
Sheet 1/2
PAD Setting
Originating Office
0 dB
8 dB
8 dB
8 dB
EMT
Carrier
Terminal
–8
0
Carrier
Terminal
0
–8
EMT
PAD
Terminating Office
0 dB
8 dB
8 dB
8 dB
EMT
Carrier
Terminal
–8
0
Carrier
Terminal
0
–8
EMT
PAD
4 dB
4 dB
4 dB
4 dB
Tandem Office