Appendix D

Modem Upgrade Instructions

4Issue the config command to verify the new hardware and modem configuration.

5Issue the ports command and enter the number of ports to be tested as a range at the prompt requesting the port list.

If the ports tests complete successfully, and the config command indicates that the Remote Annex 6300 sees the new modems, the installation is complete.

Removing Quad Modem Cards

Occasionally it may be necessary to remove quad modem cards from the Remote Annex 6300 (for example, if a quad modem card fails and needs to be replaced). On the modem carrier card, there are eight locations that can accommodate quad modem cards (up to 32 modems). These locations are numbered (1-4, 5-8, 9-12, and so on). When the Remote Annex 6300 encounters an empty location, it assumes that the modem card before the empty location is the last modem card in the series. Therefore, any empty location resulting from the removal of a quad modem card wil be interpreted as an indicator that the last modem card has been reached. Any quad modem cards installed after the empty location will not be recognized, unless the DIP switch section corresponding to the removed modem card is toggled ON. Table D-1 provides a map of the quad modem card locations and their corresponding DIP Switch assignments.

Remote Annex 6300 Hardware Installation Guide

D-7

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Nortel Networks 6300 manual Removing Quad Modem Cards