Compaq EK-ASIP2-OG. D01 manual Connecting Dialogic LSI/120 Loop-Start Module

Installing the AlphaServer IP Platform Hardware

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

AlphaServer Intelligent Peripheral Platform Hardware Owner's Guide 2–7