3Com 3C10200 NBX Installation Guide - Page 141

Verifying an Analog Line Card 141 Table 32 MAC Addresses for the Ports on an Analog Line Card ATA Card or Port MAC Address Port 1 00:e0:bb:03:91:45 Port 2 00:e0:bb:03:91:46 Port 3 00:e0:bb:03:91:47 Port 4 00:e0:bb:03:91:48 Extension 7251 7250 7252 7253 The ports on an Analog Line Card are usually not auto discovered in order. The example in Table 32 shows that port 2 was discovered first (because it was assigned the lowest extension number), then ports 1, 3, and 4. Using Status Lights You can use the status lights on an Analog Line Card to help verify that the card has been properly discovered by the NBX system. When an Analog Line Card is initializing, all four status lights (labelled 1 through 4) blink on and off in unison, approximately once every second. After an Analog Line Card has been auto discovered, each status light is off most of the time, but blinks on briefly approximately once every 10 seconds. The order in which the status lights blink is the same as the order in which the ports were auto discovered. For the example shown in Table 32, the lights would blink on in the order 2, 1, 3, 4. For detailed information on Analog Line Card status lights, see page 35.