[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 0xcf527dfe>]
rcvd [LCP ConfNak id=0x1 <asyncmap 0xa0000>]
sent [LCP ConfReq id=0x2 <asyncmap 0xa0000> <magic 0xcf527dfe>]
rcvd [LCP ConfAck id=0x2 <asyncmap 0xa0000> <magic 0xcf527dfe>]
sent [LCP ConfAck id=0x5 <mru 2000> <asyncmap 0xa0000> <magic 0x4057d44d> <auth 
chap MD5>]                                                                      
rcvd [CHAP Challenge id=0x1 <579133748db52514ba500d2ade62edb8faebc4bc>, name = "
"]                                                                              
sent [CHAP Response id=0x1 <60f59c7b50c625a7b8cb22df4c227251>, 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]             
rcvd [IPCP ConfReq id=0x1 <addr 213.87.22.1>]                                   
sent [IPCP ConfAck id=0x1 <addr 213.87.22.1>]                                   
sent [IPCP ConfReq id=0x1 <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns3 0.0.0.0>]   
rcvd [IPCP ConfNak id=0x1 <addr 213.87.22.49> <ms-dns1 213.87.0.1> <ms-dns3 213.
87.1.1>]                                                                        
sent [IPCP ConfReq id=0x2 <addr 213.87.22.49> <ms-dns1 213.87.0.1> <ms-dns3 213.
87.1.1>]                                                                        
rcvd [IPCP ConfAck id=0x2 <addr 213.87.22.49> <ms-dns1 213.87.0.1> <ms-dns3 213.
87.1.1>]                                                                        
local  IP address 213.87.22.49                                                  
remote IP address 213.87.22.1                                                   
primary   DNS address 213.87.0.1                                                
secondary DNS address 213.87.1.1                                                
Script /etc/ppp/ip-up started (pid 760)                                         
Script /etc/ppp/ip-up finished (pid 760), status = 0x0