User's Manual

Installation Manual IMN
TigerAccess™ EE
SMC7824M/VSW 31
5.2.2 Connecting Narrowband Services
Use this procedure when connecting narrowband services.
1. Cut the cables to length.
2. Attach the connectors to the cables.
3. Label and mark the cables.
4. Install the cables to the POTS interfaces on the front panel of the switch in ac-
cordance with your cabling plan.
5. Route and stow the cable in the rack.
6. Connect the cables to the PSTN switch.
Tab. 5.1 shows pin assignments for the RJ21 connectors.
Pin Signal Pin Signal
1 TIP_1 26 RING_1
2 TIP_2 27 RING_2
3 TIP_3 28 RING_3
4 TIP_4 29 RING_4
5 TIP_5 30 RING_5
6 TIP_6 31 RING_6
7 TIP_7 32 RING_7
8 TIP_8 33 RING_8
9 TIP_9 34 RING_9
10 TIP_10 35 RING_10
11 TIP_11 36 RING_11
12 TIP_12 37 RING_12
13 TIP_13 38 RING_13
14 TIP_14 39 RING_14
15 TIP_15 40 RING_15
16 TIP_16 41 RING_16
17 TIP_17 42 RING_17
18 TIP_18 43 RING_18
19 TIP_19 44 RING_19
20 TIP_20 45 RING_20
21 TIP_21 46 RING_21
22 TIP_22 47 RING_22
23 TIP_23 48 RING_23
24 TIP_24 49 RING_24
25 Not used 50 Not used
Tab. 5.1 RJ21 Connector Pin Assignment