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Install WAN Card
Three WAN cards are available.
The Single T1/E1 Link card (Model 25811)
provides a single port for DSX/CEPT or CSU
operation.
The Dual T1/E1 Link card (Model 25812) provides
two ports for DSX/CEPT or CSU operation.
The Dual T1/E1 Link card with Relays (Model
25813) provides two ports for DSX/CEPT or CSU
operation.
If an Enhanced Bus-Connect or Cross-Connect CPU
card is installed, WAN redundancy is supported for
Models 25812 and 25813.
In an Enhanced Bus-Connect system, the WAN
card installed in slot W2 is the backup for the WAN
card in W1, and the card in slot W4 is the backup
for the card in slot W3.
In a Cross-Connect system, a Model 25813
installed in slot W4 provides redundancy for up to
three WAN cards in slots W1 through W3.
Using the AAC control terminal, set the options on the
WAN cards to match the T1 options of the mobile switch.
Install the E&M Card
E&M cards (Model 25894) are installed in slots U1
through U6. Each 4-Wire E&M card must be configured
to support Type V E&M signaling. See Table 5-1 and
Figure 5-2.
Table 5-1
Switch Settings for E&M Cards
Switch
Definition
S1
Source of the E lead
S2
Type of internal source
for the E lead
S3
Type of internal source
for the M lead
S4
Normal state of the
E lead
3981-A2-GN31-20
Default
WDG
Setting
Setting
INT
INT
GND
GND
GND
BAT
OFF
OFF
November 1996
R 4
R 3
R 2
R 1
S4
Rear
view
Figure 5-2. E&M Card Switch Positions
Ports on the E&M cards are used in pairs (ports 1 and
2, 3 and 4, 5 and 6, and 7 and 8) to process data calls
through the WDG. These ports must be configured using
the AAC control terminal.
AAC Installation and Configuration
R 5
S2
S3
S1
Side
View
496-14789-01
5-3
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