我的adsl老是掉线怎么回事？

pegasus_qj

我的adsl的型号是上海贝尔的cyberlink6307KG.在linux下装了pppd,rp-pppoe的包，可是拨上去不到一分钟就会掉线，问:咋回事啊？？谢谢

Mar 21 10:06:46 254GATEWAY pppd[13365]: pppd 2.4.1 started by root, uid 0
Mar 21 10:06:46 254GATEWAY pppd[13365]: Using interface ppp0
Mar 21 10:06:46 254GATEWAY pppd[13365]: Connect: ppp0 <--> /dev/pts/1
Mar 21 10:06:46 254GATEWAY /etc/hotplug/net.agent: assuming ppp0 is already up
Mar 21 10:06:54 254GATEWAY pppoe[13366]: PPP session is 11124
Mar 21 10:06:54 254GATEWAY pppd[13365]: Remote message: Welcome to use Quidway ROUTER, Huawei Tech.^M^J
Mar 21 10:06:54 254GATEWAY pppd[13365]: local  IP address 221.216.154.48
Mar 21 10:06:54 254GATEWAY pppd[13365]: remote IP address 61.149.144.1
Mar 21 10:06:54 254GATEWAY pppd[13365]: primary   DNS address 202.106.46.151
Mar 21 10:06:54 254GATEWAY pppd[13365]: secondary DNS address 202.106.0.20
Mar 21 10:07:00 254GATEWAY sshd(pam_unix)[10189]: session opened for user root by (uid=0)
Mar 21 10:07:14 254GATEWAY pppoe[13366]: Inactivity timeout... something wicked happened on session 11124
Mar 21 10:07:14 254GATEWAY pppoe[13366]: Sent PADT
Mar 21 10:07:14 254GATEWAY pppd[13365]: Modem hangup
Mar 21 10:07:14 254GATEWAY pppd[13365]: Connection terminated.
Mar 21 10:07:14 254GATEWAY pppd[13365]: Connect time 0.5 minutes.
Mar 21 10:07:14 254GATEWAY pppd[13365]: Sent 54 bytes, received 54 bytes.
Mar 21 10:07:14 254GATEWAY pppd[13365]: Exit.