4 connecting dialogic lsi/120 loop-start module – Compaq EK-ASIP2-OG. D01 User Manual
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Installing the AlphaServer IP Platform Hardware
AlphaServer Intelligent Peripheral Platform Hardware Owner's Guide 2–7
To cable the DTI/212 120-ohm module to the E-1 network, follow these steps:
1.
Align the RJ-48C connector at the DTI/212 120-ohm module end of the E-1 to DTI/212
120-ohm cable with jack J201 on the rear bracket of the DTI/212 module.
2.
Gently push the cable connector into the RJ-48C jack until it snaps into place.
2.4.1.1.4 Connecting Dialogic LSI/120 Loop-Start Module
The customer is responsible for supplying additional cabling to connect the LSI/120 network
interface module to the telephone company lines.
Refer to the Dialogic Network Hardware Reference for additional information on LSI/120
modules.
You can choose from the following connection options:
•
Use Compaq's BC22F cable. This cable has a DB-25 connector on one end (to connect to
the LSI/120), and a 50-pin connector on the other end that provides 12 tip and ring pin
pairs that are compatible with a standard RJ-21X USOC jack.
•
Use Dialogic's SA/120 RJ-11 assembly. This assembly accepts the 50-pin male connector
from the SA/120 RJ-21 cable and terminates with 12 RJ-11 connectors. This cable allows
you to connect individual subscriber lines to the LSI/120.
The pin-out specifications in Table 2-5 and Table 2-6 are for connector P3 on the LSI/120.
This cable uses a 25-pin female DB-25 connector (Amphenol part number 745495-2 or
equivalent) on the LSI/120 end, and a 50-pin jack (Amphenol part number 157-72500-3 or
equivalent) that is compatible with an RJ-21X USOC jack.
Table 2-5: LSI/120 Loop-Start 25-Pin Designations
TIP 8
1
14
RING 12
RING 8
2
15
TIP 12
TIP 9
3
16
RING 11
RING 9
4
17
TIP 11
TIP 4
5
18
RING 10
RING 4
6
19
TIP 10
TIP 7
7
20
TIP 3
RING 7
8
21
RING 3
TIP 6
9
22
RING 1
RING 6
10
23
TIP 1
TIP 5
11
24
RING 2
RING 5
12
25
TIP 2
RESERVED
13