NEC 2400 PX Manuale Utente
NEAX2400 IPX Feature Programming Manual
Page 630
NDA-24297, Issue 1
R-37
RS-464A PAD
R-37 RS-464A
PAD
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.
which conforms to the RS-464A specification.
The following table outlines the comparison between the current PAD control and the RS-464A PAD control.
Note:
ONS: Line interface to On-Premises Line (General Telephone)
OPS: Line interface to Off-Premises Line (Log Line 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.
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.
CALLING
TERMINAL
CALLED
TERMINAL
RS-464A PAD CONTROL
THE CURRENT PAD CONTROL
ONS
ONS
6dB PAD ON
5dB PAD ON
ONS
OPS
3dB PAD ON
PAD OFF (0dB)
OPS
ONS
3dB PAD ON
PAD OFF (0dB)
OPS
OPS
PAD OFF (0dB)
PAD OFF (0dB)
ONS
ATT
6dB PAD ON
PAD OFF (0dB)
OPS
ATT
3dB PAD ON
PAD OFF (0dB)
ONS
Trunk
Data assigned to ARTD, PAD
Data assigned to ARTD, PAD
OPS
Trunk
Data assigned to ARTD, PAD2
Data assigned to ARTD, PAD
ATT
Trunk
Data assigned to ARTD, PAD
Data assigned to ARTD, PAD
PAD PATTERN 1
PAD PATTERN 1
PAD PATTERN 1
24 DTR WITH SFI 50 = 0
24 DTR WITH SFI 50 = 1
24 DTR WITH APAD SETTING
ARTD
PAD
SETTING
TRANSMIT
PAD
RECEIVE
PAD
ARTD
PAD 2
SETTING
TRANSMIT
PAD
RECEIVE
PAD
APAD
SETTING
TRANSMIT
PAD
RECEIVE
PAD
0
-8db
-8db
0
ARTD,
PAD
ARTD,
PAD
1
-2db
-2db
1
-2db
-2db
1
-2db
-2db
2
-4db
-4db
2
-4db
-4db
2
-4db
-4db
3
-6db
-6db
3
-6db
-6db
3
-6db
-6db
4
-8db
-8db
4
-8db
-8db
4
-8db
-8db
5
Unused
Unused
5
0db
0db
5
0db
0db
15
Pad Off
Pad Off
6
Unused
Unused
6
Unused
Unused
7
0db
0db
7
0db
0db