NEAX2400 IPX Feature Programming Manual
Page 632
NDA-24297, Issue 1
R-37
RS-464A PAD
General Description (cont’d)
In 4 Wire E+M Mode, the 8TLTR can set PAD values using switch settings and ARTD and APAD values.
In the following table, P0 and P1 are assigned by setting ARTD to a value of 0, CDN 30:PAD and setting values by
using Switch 1 (P0) and Switch 2 (P1). P2 and P3 are assigned by setting ARTD/APAD to a value of 5, and PAD
values are set by using Switch 3 positions 1, 2, 3 and 4 (P2) and positions 5, 6, 7 and 8 (P3).
Operating Procedure
The following connections are performed:
STATION-TO-STATION CONNECTION
STATION-TO-ATT CONNECTION
CONNECTION VIA ATT
OUTGOING C.O. LINE CONNECTION FROM STATION
OUTGOING C.O. LINE CONNECTION FROM ATT
Service Conditions
1.
RS-464A PAD control is performed for lines and external trunks.
2.
ONS (general telephone) and OPS (long line telephone) are identified by the SFC of the station concerned.
8TLTR (2W E+M) WITH SFI 50 = 0
8TLTR (2W E+M) WITH SFI 50 = 1
8TLTR (2W E+M) WITH APAD
SETTING
ARTD
PAD
TRANSMIT
PAD
RECEIVE
PAD
ARTD
PAD 2
TRANSMIT
PAD
RECEIVE
PAD
APAD
SETTING
TRANSMIT
PAD
RECEIVE
PAD
0
0db
0db
0
ARTD
PAD
1
-3db
-3db
1
-3db
-3db
1
-3db
-3db
2
-6db
-6db
2
-6db
-6db
2
-6db
-6db
3
-6db
+6db
3
-6db
+6db
3
-6db
+6db
4
0db
+6db
4
0db
+6db
4
0db
+6db
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
8TLTR (4W E+M) WITH SFI 50 = 0
8TLTR (4W E+M) WITH SFI 50 = 1
8TLTR (4W E+M) WITH APAD
SETTING
ARTD
PAD
TRANSMIT
PAD
RECEIVE
PAD
ARTD
PAD 2
TRANSMIT
PAD
RECEIVE
PAD
APAD
SETTING
TRANSMIT
PAD
RECEIVE
PAD
0
P0
P1
0
ARTD
PAD
1
-3db
-3db
1
-3db
-3db
1
-3db
-3db
2
-6db
-6db
2
-6db
-6db
2
-6db
-6db
3
-12db
-11db
3
-12db
-11db
3
-12db
-11db
4
-16db
-11db
4
-16db
-11db
4
-16db
-11db
5
P2
P3
5
P2
P3
5
P2
P3
15
Pad Off
Pad Off
6
Unused
Unused
6
Unused
Unused
7
0db
0db
7
0db
0db
