What could be the reason of linux pppd process failing in NCP negotiation with service provider during PPP?

I want to set up internet on my lapptop using mobile DUN profile. But I am able to do PAP authentication and LCP negotiations but pppd fails in NCP phase when it requests for IP address and dns.

what could be p开发者_如何转开发ossible the reasons for it ?

Link to ppp script : http://pastebin.com/qBPw8Tb2

Link to connection log : http://pastebin.com/KVrUDafF

I think pppd is failing any of the following step of ipcp negoitaions: 1.ip negotiations of both end-points 2.dns address negotiation, 3.tcp header compression technique negotiation.

Can anybody provide some inputs ?

I have remove the following parameter from ppp scripts and it worked .

-novj -novjccomp