Cisco Systems IGX 8400 Series manual Connecting a UVM to J1 Lines

Installing Voice Cards

Connecting a UVM to J1 Lines

Voice or data connections on a J1 line use the UVM front card and the BC-UVI-2J1EC back card. The procedure for connecting the J1 lines is as follows:

Step 1 Bring each cable through the opening at the bottom or top of the cabinet (whatever is applicable) and along the back of the unit. You can use the cable management feature to help route the cables.

Step 2 Attach each cable according to the cabling requirement (pass-through, external, and so on).

If the intended compression for voice channels is LDCELP and the number of channels on a J1 line exceeds 16, install cabling for pass-through. For the steps that follow, refer to Figure 3-10for an illustration of the possible UVM cabling arrangements. Note that, in Example B, the number of channels has not exceeded the UVM capacity, so pass-through is unnecessary.

•On port 1 of the primary UVM, connect the cable to the CPE.

•On port 2 of the primary UVM, connect the cable to port 2.

•Connect the cable from port 2 of the primary card to either port 1 or port 2 of the secondary UVM. Typically, if the secondary UVM is supporting the passed-through channels from only one primary UVM, you would connect the cable from port 2 of the primary card to port 1 of the secondary card. However, because the secondary UVM can receive 16 passed-through channels with LDCELP compression, you can pass 15 channels each from other UVMs.

For a description of the pass-through feature, refer to the Cisco IGX 8400 Series Reference.

3-22Cisco IGX 8400 Series Installation and Configuration