Hi all experts,
I’m newbie for Wavecom GR64 and I would like to setup IP over GPRS for data transmission. But I got a problem when PPP setup, I don’t why the MT (Mobile Termination) always not reply IPCP Configure-ack message to TE (Terminal Equipment) after received IPCP Configure-request message from TE and returned a LCP Configure-request message 
From network point of view the PDP already activated and IP was assigned to TE via MT.
Thanks for attention and regards,
T+CGREG? (show GPRS Network Registration Status)
+CGREG: 0,1 (Registered, home network)
#**
$GPRMC,TD99**2# (Dial)
CONNECT#**0D0A
[LCP (Link Control Protocol) Configure-request message]
7E FF 03 C021 01 01 000E 0206000A00000304C023F34D0101000E0206000A00000304C0230201000E0206000A00000304C02300000000000000000000
[LCP Configure-ack message]
7E FF 03 C021 02 01 000E 0206000A00000304C023CDCE 7E7E
[LCP Configure-nak message]
7E FF 03 C021 03 01 000A 0206000A00006C500301000A0206000A00000102000A020630303041
[LCP Configure-request message]
7E FF 03 C021 01 02 000A 0206303030412C827E7E
[LCP Configure-ack message]
7E FF 03 C021 02 02 000A 02063030304145F60202000A020630303041
01060004
[PAP (Password Authentication Protocol) Authenticate-request message]
7E FF 03 C023 01 03 0004E116 7E7E
[PAP Authenticate-ack message]
7E FF 03 C023 02 03 000500FD020203000500
[IPCP (Internet Protocol Control Protocol) Configure-request message]
7E FF 03 8021 01 03 000A 0306 00000000 E9B3 7E7E
[IPCP Configure-request message]
7E FF 03 8021 01 02 000A 0306 55667788 4D23
[IPCP Configure-ack message]
7E FF 03 8021 02 02 000A 0306 55667788 2457 7E7E
[IPCP Configure-nak message]
7E FF 03 8021 03 03 0016 0306 0A837045 8106 CA2D5444 8306 CA2D5443 B16B
[IPCP Configure-request message]
7E FF 03 8021 01 04 0016 0306 0A837045 8106 CA2D5444 8306 CA2D5443 1EB5 7E7E
[LCP Configure-request message]
7E FF 03 C021 01 03 0016 0104 00C80206000A0000070208020304C02359E101030016010400C80206000A0000070208020304C0237E