Rs-464A Pad - NEC NEAX 2400 ICS Features Manual

R-37
R-37
General Description
This service is for changing the current PAD control system for the lines and external trunks to a PAD
control system which conforms to the RS-464A specification.
The following table outlines the comparison between the current PAD control and the RS-464A PAD
control.
Calling
Terminal
ONS
ONS
OPS
OPS
ONS
OPS
ONS
OPS
ATT
Note: ONS: Line interface to On-Premises Line (General Telephone)
OPS: Line interface to Off-Premises Line (Log Line Telephone)
When using the 24DTR/24CCT/24PRT, APAD and ARTD, PAD 2 are ignored when switch settings are
set to ARTD fixed, and PAD patterns 1 and 2 are selectable by switch settings.
Note: In the following tables, -db indicates a decrease in volume level; +db indicates an increase in volume.
PAD PATTERN 1
24 DTR with SFI 50 = 0
ARTD
Transmit
PAD
PAD
Setting
0 -8db
1 -2db
2 -4db
3 -6db
4 -8db
5 0db
6 Unused
7 0db
Page 442
Called
RS-464A PAD Control
Terminal
ONS
OPS
ONS
OPS
ATT
ATT
Trunk Data assigned to ARTD, PAD
Trunk Data assigned to ARTD, PAD2
Trunk Data assigned to ARTD, PAD
PAD PATTERN 1
24 DTR with SFI 50 = 1
ARTD
Receive
PAD 2
PAD
Setting
-8db 0
-2db 1
-4db 2
-6db 3
-8db 4
0db 5
Unused 6
0db 7

RS-464A PAD

RS-464A PAD
6dB PAD ON
3dB PAD ON
3dB PAD ON
PAD OFF (0dB)
6dB PAD ON
3dB PAD ON
Transmit Receive
PAD PAD
ARTD, ARTD,
PAD PAD
-2db -2db
-4db -4db
-6db -6db
-8db -8db
0db 0db
Unused Unused
0db 0db
NEAX2400 ICS Business Features and Specifications
The Current PAD Control
5dB PAD ON
PAD OFF (0dB)
PAD OFF (0dB)
PAD OFF (0dB)
PAD OFF (0dB)
PAD OFF (0dB)
Data assigned to ARTD, PAD
Data assigned to ARTD, PAD
Data assigned to ARTD, PAD
PAD PATTERN 1
24 DTR with APAD Setting
APAD Transmit
Setting PAD
1 -2db
2 -4db
3 -6db
4 -8db
5 Unused
15 Pad Off
NDA-24143, Issue 4
Receive
PAD
-2db
-4db
-6db
-8db
Unused
Pad Off