cat /tmp/log
 PPPD is offline. Trying to start ...
Trying to switch: Huawei switch to Modem mode
Trying find port after switching to modem mode:..................................................................................................[ OK ]
Trying find port again:[ OK ]
Starting pppd:
Script chat ABORT "ERROR" ABORT "NO DIALTONE" TIMEOUT 5 ABORT "BUSY" ABORT "NO ANSWER" ABORT "NO CARRIER" "" AT OK ATD*99***1# CONNECT finished (pid 1524), status = 0x8
Connect script failed
Script chat ABORT "ERROR" ABORT "NO DIALTONE" TIMEOUT 5 ABORT "BUSY" ABORT "NO ANSWER" ABORT "NO CARRIER" "" AT OK ATD*99***1# CONNECT finished (pid 1537), status = 0x0
Serial connection established.
using channel 1
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB0
sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0x88bda9d2> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x0 <asyncmap 0x0> <auth chap MD5> <magic 0xe8173d> <pcomp> <accomp>]
No auth is possible
sent [LCP ConfRej id=0x0 <auth chap MD5>]
rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0x88bda9d2> <pcomp> <accomp>]
rcvd [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xe8173d> <pcomp> <accomp>]
sent [LCP ConfAck id=0x1 <asyncmap 0x0> <magic 0xe8173d> <pcomp> <accomp>]
sent [LCP EchoReq id=0x0 magic=0x88bda9d2]
sent [CCP ConfReq id=0x1 <deflate 15> <deflate(old#) 15> <bsd v1 15>]
sent [IPCP ConfReq id=0x1 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 0.0.0.0> <ms-dns2 0.0.0.0>]
rcvd [LCP DiscReq id=0x2 magic=0xe8173d]
rcvd [LCP EchoRep id=0x0 magic=0xe8173d 88 bd a9 d2]
rcvd [LCP ProtRej id=0x3 80 fd 01 01 00 0f 1a 04 78 00 18 04 78 00 15 03 2f]
Protocol-Reject for 'Compression Control Protocol' (0x80fd) received
rcvd [IPCP ConfNak id=0x1 <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>]
sent [IPCP ConfReq id=0x2 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>]
rcvd [IPCP ConfNak id=0x2 <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>]
sent [IPCP ConfReq id=0x3 <compress VJ 0f 01> <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>]
rcvd [IPCP ConfReq id=0x0]
sent [IPCP ConfNak id=0x0 <addr 0.0.0.0>]
rcvd [IPCP ConfRej id=0x3 <compress VJ 0f 01> <ms-wins 10.11.12.13> <ms-wins 10.11.12.14>]
sent [IPCP ConfReq id=0x4 <addr 0.0.0.0> <ms-dns1 10.11.12.13> <ms-dns2 10.11.12.14>]
rcvd [IPCP ConfReq id=0x1]
sent [IPCP ConfAck id=0x1]
rcvd [IPCP ConfNak id=0x4 <addr 10.230.100.133> <ms-dns1 10.78.72.37> <ms-dns2 10.78.72.44>]
sent [IPCP ConfReq id=0x5 <addr 10.230.100.133> <ms-dns1 10.78.72.37> <ms-dns2 10.78.72.44>]
rcvd [IPCP ConfAck id=0x5 <addr 10.230.100.133> <ms-dns1 10.78.72.37> <ms-dns2 10.78.72.44>]
Could not determine remote IP address: defaulting to 10.64.64.64
Script /etc/ppp/ip-pre-up started (pid 1540)
Can't find default gw
Script /etc/ppp/ip-pre-up finished (pid 1540), status = 0x0
local  IP address 10.230.100.133
remote IP address 10.64.64.64
primary   DNS address 10.78.72.37
secondary DNS address 10.78.72.44
[ OK ]
Find Mgcamd file...
Script /etc/ppp/ip-up started (pid 1551)
Copy right DNS config from PPPD
Script /etc/ppp/ip-up finished (pid 1551), status = 0x0
 Try start Mgcamd with pppd
[root@stlinux]#