3Com 3C13886 Installation Guide - Page 58

3Com Router Module Guide Chapter 3 Multifunctional Interface Modules Caution: Both Router T1 Voice Module cable and network interface connector are optional accessories. You should order them when ordering a Router T1 Voice Module. Otherwise, they will not be provided. 3.3.6 Connecting Interface Cable Caution: z Some measures are taken to protect Router T1 Voice Module. Still, you are recommended to install a special lightning arrester at the input end of its connection cable to obtain better lightning protection when the cable is led outdoors; z Read the mark identifying a port before you connect a cable to it, making sure it is the correct port. Wrong connection tends to damage interface modules and even the Router. Step 1: Insert one end of a Router T1 Voice Module cable into the DB15 port on the Router T1 Voice Module; Step 2: Connect the other end of the Router T1 Voice Module cable to: z The peer device if the cable is long enough; z A network interface connector and then the peer device using another Router T1 Voice Module cable, if it is not long enough, as shown in the following figure: T1VI cable Router DB15 Network interface connector RJ45 RJ45 Straight-through network cable Voice device Figure 3-19 Extending a Router T1 Voice Module cable Step 3: Power on the Router, and check the LEDs of the corresponding slot on the front panel of the Router: ON means Router T1 Voice Module is operating normally and OFF means the POST of Router T1 Voice Module has failed. In the latter case, please contact your agent; Step 4: Check the status of the LINK LED on the Router T1 Voice Module panel. It is OFF when fault has occurred to the link. In this case, please check the link. 3-14