I got a merlin v620 card setup according to
http://www.linuxdevcenter.com/pub/a/..._cellular.html

but when running the command
pppd call verizon

I get
# pppd call verizon
Starting CDMA connect script
Connect script failed

tail /var/log/messages gives
Feb 3 09:16:57 localhost pppd[7520]: pppd 2.4.3 started by bruce, uid 0
Feb 3 09:16:58 localhost chat[7521]: timeout set to 10 seconds
Feb 3 09:16:58 localhost chat[7521]: abort on (BUSY)
Feb 3 09:16:58 localhost chat[7521]: abort on (NO ANSWER)
Feb 3 09:16:58 localhost chat[7521]: abort on (NO CARRIER)
Feb 3 09:16:58 localhost chat[7521]: send (ATZ^M)
Feb 3 09:16:58 localhost chat[7521]: expect (OK)
Feb 3 09:17:08 localhost chat[7521]: alarm
Feb 3 09:17:08 localhost chat[7521]: Failed
Feb 3 09:17:09 localhost pppd[7520]: Exit.

I don't know where I can get a more clear dump to figure out what caused it to fail. any ideas please?

ok, I don't what did it, but I am able to connect now. however, on and off, it still fails to connect as described above.

the other thing is the Merlin card does not seems to allow upload. is this expected?