Linux+DUN with Sony W600i

[ktrout]

I'm trying to get my SuSE 10.1 Linux laptop to be able to use my Cingular GPRS connection, but keep having trouble getting PPP to negotiate. I have followed the directions on Cingular's knowledgebase including using their PPP config files.
I also just updated my phone to the latest software.
This is the debug output I get from pppd:
dell:/etc/ppp/peers # pppd call gprs
Serial connection established.
using channel 15
Using interface ppp0
Connect: ppp0 <--> /dev/rfcomm0
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x83f7860d>]
rcvd [LCP ConfReq id=0x2 <auth chap MD5> <accomp> <pcomp> <asyncmap 0x0> <magic 0x7960d779>]
sent [LCP ConfRej id=0x2 <accomp> <pcomp>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x83f7860d>]
rcvd [LCP ConfReq id=0x3 <auth chap MD5> <asyncmap 0x0> <magic 0x7960d779>]
sent [LCP ConfAck id=0x3 <auth chap MD5> <asyncmap 0x0> <magic 0x7960d779>]
rcvd [CHAP Challenge id=0x0 <8966b5350ab72b01ab2d28d9e34918b349df47228a5d41832 6dbecedede661d63d0c8f85f8278f3c486ac421122dbaf03b7 8bc63>, name = "Kermit"]
sent [CHAP Response id=0x0 <13e63e72cbb7dad89b6d29683abecff4>, name = "username"]
rcvd [CHAP Success id=0x0 "Congratulations!"]
CHAP authentication succeeded: Congratulations!
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
rcvd [LCP TermReq id=0x1]
LCP terminated by peer
sent [LCP TermAck id=0x1]
Connection terminated.
Modem hangup

The most bizarre thing is that after I attempt this, I have to clear the settings on the phone using the "Master Reset" or I can't even use the Internet from the phone itself!