Nortel Networks 6300 - Manual (Page 123)

C-7 Remote Annex 6300 Hardware Installation Guide
Appendix C Modem Carrier Card Upgrade Instructions
4 Issue the config command to verify the new hardware and
modem configuration.
5 Issue 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.