the first of many newbie questions

Sorry for these but our senior network engineer is gone - I have a GBIC
in a CAT4006 that connects to a Verizon NID that provides a 1 Gig
circuit. Can the GBIC be hard coded for speed and duplex? I tried doing
duplex full and speed 1000 but those commands wernt accepted.
Telecom, Cabling and VoIP continues...
Tags: telecom cabling Cable LAN