3Com 3C10200 NBX Installation Guide - Page 174

174 CHAPTER 9: 3COM LEGACY LINK CARDS Troubleshooting Legacy Link Card Installation If you encounter problems with a Legacy Link Card, try checking the following items: ■ Is the NBX system functioning properly? See the NBX documentation. ■ Are the RJ21x and 48V external power connectors firmly seated into their front-panel connectors? Is the power indicator on the external power supply lit? ■ Are the card LED indications correct? ■ Check the basics: swap out the phone, check the handset cable, the base cable, and so forth. ■ Check that the Legacy Link Card license is installed on the NBX system. This can be found within the NBX NetSet utility in the Operations > Licenses screen as the Citel Analog Phone License. ■ Check that the Auto Discover Other Devices feature is enabled on the NBX system. (System-wide Settings > Auto Discovery.) ■ Review the FAQs and Release Notes listed at 3Com Partner Access web site. ■ If you are using Standard IP or IP on the Fly on your NBX system, be sure you have used the GWconfig utility to assign an IP address to your Legacy Link Card. If a problem still exists after working through the checklist, contact your distributor for advice and further support. RJ21x Wiring for North America Note that 2 wires only per handset should be cabled to the center pair of the RJ11 connector. Level 3 or greater cable is recommended, with a maximum loop-length of 2500ft/750m, and up to REN2. Analog telephone cable pairings for North America are shown in Table 33 on page 176. Table 34 on page 177 shows cable pairing for Meridian handsets. Table 35 on page 178 shows cable pairing for Norstar handsets. CAUTION: Phone cables should be clearly labeled, especially if other 3Com Legacy Link Cards are in use on the same site. The operating voltage on the phone cable varies between different 3Com Legacy Link