Help using DUN with Samsung SGH-D407
 

I'm trying to get my 770 to connect to the internet through my Samsung SGH-D407 mobile phone and USA Cingular (AT&T) provider. The 770 connects fine with wireless and even a co-worker's Motorola RAZR phone (Cingular also). But the Samsungs are booger-phones and need much hacking to work.

I've pieced together various files from sources on the internet and have this output from the pon command. I'm hoping someone can help me interpret this:

AT
OK
AT+CGDCONT=1,"IP","WAP.CINGULAR"
OK
ATD*99***1#
CONNECT
Serial connection established.
using channel 6
Using interface ppp0
Connect: ppp0 <--> /dev/rfcomm0
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xc10bfa51> <pcomp>]
rcvd [LCP ConfReq id=0x1 <asyncmap 0xa0000> <auth pap>]
No auth is possible
sent [LCP ConfRej id=0x1 <auth pap>]
rcvd [LCP ConfRej id=0x1 <pcomp>]
sent [LCP ConfReq id=0x2 <asyncmap 0x0> <magic 0xc10bfa51>]
rcvd [LCP ConfReq id=0x2 <asyncmap 0xa0000>]
sent [LCP ConfAck id=0x2 <asyncmap 0xa0000>]
rcvd [LCP ConfNak id=0x2 <asyncmap 0xa0000>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
sent [LCP ConfReq id=0x3 <asyncmap 0xa0000> <magic 0xc10bfa51>]
LCP: timeout sending Config-Requests
Connection terminated.