4G模块使用2G的sim卡不能获取IP 是什么原因_问答

运行脚本
pppd connect 'chat -v "" "AT" "" "AT+CGDCONT=1,"IP","3gnet"" "" "ATD*99# CONNECT"' /dev/ttyUSB3 115200 nodetach debug noauth defaultroute usepeerdns crtscts user null password null -pc -ac $*

打印输出
Starting pppd
Script chat -v "" "AT" "" "AT+CGDCONT=1,"IP","3gnet"" "" "ATD*99# CONNECT" finished (pid 1037), status = 0x0
Serial connection established.
using channel 2
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB3
sent [LCP ConfReq id=0x1 ]
rcvd [LCP ConfReq id=0x8 ]
sent [LCP ConfRej id=0x8 ]
rcvd [LCP ConfAck id=0x1 ]
rcvd [LCP ConfReq id=0x9 ]
sent [LCP ConfAck id=0x9 ]
rcvd [LCP DiscReq id=0xa magic=0x48a16e7c]
rcvd [CHAP Challenge id=0x1 <8cad8c238ed4d5e80e2e762ef6b0c950>, name = "UMTS_CHAP_SRVR"]
sent [CHAP Response id=0x1 , name = "null"]
rcvd [CHAP Success id=0x1 ""]
CHAP authentication succeeded
CHAP authentication succeeded
sent [CCP ConfReq id=0x1 ]
sent [IPCP ConfReq id=0x1

]
rcvd [LCP ProtRej id=0xb 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
Modem hangup
Connection terminated.
pppd exited with 16

用了3G的sim卡一直打印这是怎么回事
Script /sbin/chat -v -t3 -f /etc/ppp/peers/wcdma-connect finished (pid 1051), status = 0x0
Serial connection established.
using channel 3
Using interface ppp0
Connect: ppp0 <--> /dev/ttyUSB3
sent [LCP ConfReq id=0x1 ]
rcvd [LCP ConfReq id=0x2c ]
sent [LCP ConfAck id=0x2c ]
rcvd [LCP ConfAck id=0x1 ]
rcvd [LCP DiscReq id=0x2d magic=0x49a15cdb]
rcvd [CHAP Challenge id=0x1 <92b22efb1210ceb6806b8192a4ebb86e>, name = "UMTS_CHAP_SRVR"]
sent [CHAP Response id=0x1 <03d3703efc2d495cd8283d4f14c35505>, name = "card"]
rcvd [CHAP Success id=0x1 ""]
CHAP authentication succeeded
CHAP authentication succeeded
sent [IPCP ConfReq id=0x1

]
rcvd [IPCP ConfNak id=0x1

]
sent [IPCP ConfReq id=0x2

]
rcvd [IPCP ConfNak id=0x2

]
sent [IPCP ConfReq id=0x3

]
rcvd [IPCP ConfNak id=0x3

]
sent [IPCP ConfReq id=0x4

]
rcvd [IPCP ConfNak id=0x4

]
sent [IPCP ConfReq id=0x5

]
rcvd [IPCP ConfNak id=0x5

]
。。。。。。
^CTerminating on signal 2
sent [LCP TermReq id=0x2 "User request"]
rcvd [LCP TermAck id=0x2]
Connection terminated.
abort on (BUSY)
abort on (ERROR)
abort on (NO DIALTONE)
send (/K^M)reak to the modem/n
send (+++ATH^M)
Script /sbin/chat -s -v -f /etc/ppp/peers/wcdma-disconnect finished (pid 1057), status = 0x0
Serial link disconnected.

4G模块使用2G的sim卡不能获取IP 是什么原因

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4G模块使用2G的sim卡 不能获取IP 是什么原因

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4G模块使用2G的sim卡不能获取IP 是什么原因