Registered on tmo network w/o web access twice using a 'blank" modem initialization string. Subsequent attempts w/ error # 736 Remote computer disconnected.

Init String +cgdcont=1,"IP","wap.voicestream.com","",0,0 causes error #692 hardware failure. (works well with 7100t)

Modem query ok except AT+FCLASS, AT#CLS=?, AT+GCI=? and AT+GCI ? COMMANDS NOT SUPPORTED.

Modem log contains:
12-22-2005 21:59:14.492 - Send: AT+cgdcont=1,"IP","wap.voicestream.com","",0,0<cr>
12-22-2005 21:59:34.501 - Timed out waiting for response from modem

Desktop software 4.1
Any ideas?