[root@linux /root]# pppd call gprs  
Press CTRL-C to close the connection at any stage!
defining PDP context...
AT
OK
ATH
OK
ATE1
OK
AT+CGDCONT=1,"IP","internet.mts.ru"
OK
waiting for connect...

ATD*99***1#
CONNECT
Connected.
If the following ppp negotiations fail,
try restarting the phone.

Serial connection established.
Using interface ppp0
Connect: ppp0 <--> /dev/ttyS0
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x27f09a9e>]
rcvd [LCP ConfNak id=0x1 <asyncmap 0xa0000>]
sent [LCP ConfReq id=0x2 <asyncmap 0xa0000> <magic 0x27f09a9e>]
rcvd [LCP ConfAck id=0x2 <asyncmap 0xa0000> <magic 0x27f09a9e>]
rcvd [LCP ConfReq id=0x3 <mru 2000> <asyncmap 0xa0000> <pcomp> <accomp> <magic 0xcf63600b> <auth chap MD5>]
sent [LCP ConfRej id=0x3 <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x5 <mru 2000> <asyncmap 0xa0000> <magic 0xcf63600b> <auth chap MD5>]
sent [LCP ConfAck id=0x5 <mru 2000> <asyncmap 0xa0000> <magic 0xcf63600b> <auth chap MD5>]
rcvd [CHAP Challenge id=0x1 <bac259b816abb05de88c7ef83263c38bf2317f15>, name = ""]
sent [CHAP Response id=0x1 <a178029a86b066e8e659fe4a1d6d5eb6>, name = "mts"]
rcvd [CHAP Success id=0x1 ""]
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]
sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15>]
rcvd [LCP ProtRej id=0x6 80 fd 01 01 00 0c 1a 04 78 00 18 04 78 00]
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>]
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>]
IPCP: timeout sending Config-Requests
sent [LCP TermReq id=0x3 "No network protocols running"]
rcvd [LCP TermAck id=0x3 "No network protocols running"]
Connection terminated.

Sending break to the modem

PDP context detached
Serial link disconnected.
[root@linux /root]#