Avaya DEFINITY Series Installation And Maintenance Manual page 92

DEFINITY Enterprise Communication Server Release 9
Installation and Maintenance for Survivable Remote EPN 555-233-121
2 SREPN Maintenance
110 block cross-connect pins
Figure 2-20
TN 2301
SR Switch
R6R PPN
"Y" cable
A-PNC
B-PNC
Figure Notes
1. Switches to ground after link failure
(approximately 3 minutes)
Figure 2-20. SREPN pinout and connections
shows the pinout and cross-connections for the SREPN.
SRP
Latch
Latch
Reset
TN 790
processor
EI
45
47 SRPresent (V-BR)
48
SRActive (BR-V)
1
41 -48v. (V-BL)
42 -48v. Rt (BL-V)
43 SRCnt1 (V-O)
44 SRCntRt (O-V)
24 CustRtn (O-BK)
46
PwrFail (G-V)
CustA (BK-O)
23
SR Switch
SRP Aux
46 3
Aux_Alm_2 (W-O)
Ext_Alm_Rt (G-V)
Ext_Alm (V-G)
2. Momentary closure after 3 minutes
Issue 2
November 2000
B
A
(W-G) Aux_Alm_3 5
7
(W-BR) Aux_Alm_4
(V-BL) Grd 41
(BL-V) -48v. 42
(V-G) Ext_Alm 45
2
(G-V) Ext_Alm_Rt 46
(O-W) Grd 4
(W-O) Aux_Alm_2 3
-48v.
EPN
Aux
Maintenance/Test
TN775C
EPN
iodf001 EWS 111198
2-38
EI
EI