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System Cards 9-29
WAN Card WAN Card User Screens and Settings
RDNT RULES
The selection of Redundancy Rules will define the method of determining what event will
trigger a WAN port to switch to its redundant mate. The options are none, OOS, and CGA.
GROUP
The Group setting identifies a method of link-fail alarm propagation from upstream trunks to
downstream tributaries when the system is configured for alarm transcoding.
The selection of a group is a two-step process. After identifying the group number (1 to 4),
select the secondary group (A [child group], B [child group] or C [parent group]).
Figure 9-18 shows two system units with "parent-child" groupings. The child groups are
designated as "A" and "B." The parent groups are designated "C”.
Figure 9-18.Using WAN Groups
The WAN links between the Device and the System Unit (A, B, A1, and B1) are called
tributaries. The WAN link between the two SYS Units (C and C1) is referred to as a trunk.
In the normal condition (no WAN groups selected), a failure on any of the tributaries
supplying Device 1 would be reported at SYS 1 and Device 1 only. A failure of the trunk from
C to C1 would be reported at SYS 1 and 2 only.
When Groups are created at both system units, a trunk failure (C to C1) will inform all of the
associated tributaries (A and B, A1 and B1) of that condition.
When groups are used in conjunction with the Network Management option (mentioned
earlier) and the AIS/ALM is set to tcodr, a failure of any of the tributaries will propagate the
failure through the trunk to the associated tributary at the other end (A to A1 or B to B1).
The following notification procedure is followed:
1. A Loss of Signal, Loss of Frame, Error Rate Exceeded, or AIS failure of the transmit
leg of W1-1(A) occurs between Device 1 and SYS 1.
System #1
Device #1
Tributary Trunk Tributary
W1-1 (A)
W1-2 (B)
W2-1
(C) (C)
W3-1 (A)
W3-2 (B)
Device #2
System #2
CAUTION:
For contin
ued
prot ecti
on a gains t fire
,
replace onl
y w ith the sam
e
type a nd r ating
of fu se
Premisys Comm
unications , Inc.
Model IMA
CS/600
T 5A
250
V
IEC
Fus e
5A SB 250V
UL/
CSA
24/4
8V 5A
LIS TED 9K09
LR 770
63
120-2 00-240 V
~
3A, 50 / 60 Hz
Telephon
e
Equ
ipme nt
Class
2 Po wer S ource
®
®
UL
+ - + -
+ -
R
G
R
C
O
M
VN
VB
VA
HSU -T 530/35
S 60 HSU -T 530/ 35
S
60
HSU-T 530/35
S
60
HSU -T 530/35
S
60
HSU -T 530 /35 S 60
HSU-T 530/35 S 60
BRI
HSU
530/35 S 60
P
2
P
1
P
4
P
3
FXO 813 9
N
O
D E
T E
R
M
C
O M
P
P
1
P 1
CPU
CLOCK NVRAM
W1-1
CSU
W1-2
DSX
WAN
IF T1+DS 1
CAUTION:
For contin
ued
protection a
gainst fir
e,
replace onl
y with the s
ame
type and rating of fuse
Premisys Comm
unications , Inc.
Model IMA
CS/ 600
T 5A
250
V
IEC
Fuse
5A S
B
250V
UL/
CSA
24/48V
5A
LIST ED 9K0
9
LR 77
063
120-200-240V
~
3A, 50 / 60
Hz
Telep hon
e
Equipmen
t
Class 2 P
owe r Source
®
®
UL
+ - + -
+ -
R
G
R
C
O
M
VN
VB
VA
HSU -T 530/ 35
S 60 HSU -T 530/ 35
S
60
HSU -T 530/ 35
S
60
HSU -T 530/ 35
S
60
HSU -T 530 /35 S 60
HSU-T 530 /35 S 6 0
BRI
HSU
530 /35 S 6 0
P
2
P
1
P
4
P
3
FXO 8139
N
O
D E
T E
R
M
C
O M
P
P
1
P 1
CPU
CLOCK NVR AM
W1-1
CSU
W1-2
DSX
WAN
IF T1+ DS1