Wie vermeide ich ADSL-Verbindung timout?

Hallo Liste,
folgendes ist in /var/log/messages:

Nov  3 00:13:20 localhost adsl-connect: ADSL connection lost; attempting 
re-connection.
Nov  3 00:13:25 localhost pppd[19214]: pppd 2.4.1 started by root, uid 0
Nov  3 00:13:25 localhost pppd[19214]: Using interface ppp0
Nov  3 00:13:25 localhost pppd[19214]: Connect: ppp0 <--> /dev/pts/0
Nov  3 00:13:25 localhost /etc/hotplug/net.agent: assuming ppp0 is 
already up
Nov  3 00:13:25 localhost pppoe[19215]: PPP session is 2872
Nov  3 00:13:26 localhost pppd[19214]: local  IP address
Nov  3 00:13:26 localhost pppd[19214]: remote IP address
Nov  3 00:13:26 localhost pppd[19214]: primary   DNS address 217.237.150.33
Nov  3 00:13:26 localhost pppd[19214]: secondary DNS address 217.237.151.161
Nov  3 00:13:46 localhost pppoe[19215]: Inactivity timeout... something 
wicked happened on session 2872
Nov  3 00:13:46 localhost pppoe[19215]: Sent PADT
Nov  3 00:13:46 localhost pppd[19214]: Modem hangup
Nov  3 00:13:46 localhost pppd[19214]: Connection terminated.
Nov  3 00:13:46 localhost pppd[19214]: Connect time 0.4 minutes.
Nov  3 00:13:46 localhost pppd[19214]: Sent 54 bytes, received 54 bytes.
Nov  3 00:13:46 localhost /etc/hotplug/net.agent: NET unregister event 
not supported
Nov  3 00:13:46 localhost pppd[19214]: Exit.
Nov  3 00:13:46 localhost adsl-connect: ADSL connection lost; attempting 
re-connection.
Nov  3 00:13:51 localhost pppd[19287]: pppd 2.4.1 started by root, uid 0
Nov  3 00:13:51 localhost /etc/hotplug/net.agent: assuming ppp0 is 
already up
Nov  3 00:13:51 localhost pppd[19287]: Using interface ppp0
Nov  3 00:13:51 localhost pppd[19287]: Connect: ppp0 <--> /dev/pts/0
Nov  3 00:13:52 localhost pppoe[19288]: PPP session is 2972
Nov  3 00:13:53 localhost pppd[19287]: local  IP address
Nov  3 00:13:53 localhost pppd[19287]: remote IP address
Nov  3 00:13:53 localhost pppd[19287]: primary   DNS address 217.237.150.33
Nov  3 00:13:53 localhost pppd[19287]: secondary DNS address 217.237.151.161
Nov  3 00:14:59 localhost pppoe[19288]: Inactivity timeout... something 
wicked happened on session 2972
Nov  3 00:14:59 localhost pppoe[19288]: Sent PADT
Nov  3 00:14:59 localhost pppd[19287]: Modem hangup
Nov  3 00:14:59 localhost pppd[19287]: Connection terminated.
Nov  3 00:14:59 localhost pppd[19287]: Connect time 1.2 minutes.
Nov  3 00:14:59 localhost pppd[19287]: Sent 5969 bytes, received 30242 
bytes.
Nov  3 00:14:59 localhost /etc/hotplug/net.agent: NET unregister event 
not supported
Nov  3 00:14:59 localhost pppd[19287]: Exit.
Nov  3 00:14:59 localhost adsl-connect: ADSL connection lost; attempting 
re-connection.
Nov  3 00:15:04 localhost pppd[19360]: pppd 2.4.1 started by root, uid 0
Nov  3 00:15:04 localhost pppd[19360]: Using interface ppp0
Nov  3 00:15:04 localhost pppd[19360]: Connect: ppp0 <--> /dev/pts/0
Nov  3 00:15:04 localhost /etc/hotplug/net.agent: assuming ppp0 is 
already up
Nov  3 00:15:04 localhost pppoe[19361]: PPP session is 3221
Nov  3 00:15:05 localhost pppd[19360]: local  IP address
Nov  3 00:15:05 localhost pppd[19360]: remote IP address
Nov  3 00:15:05 localhost pppd[19360]: primary   DNS address 217.237.150.33
Nov  3 00:15:05 localhost pppd[19360]: secondary DNS address 217.237.151.161
Nov  3 00:15:25 localhost pppoe[19361]: Inactivity timeout... something 
wicked happened on session 3221
Nov  3 00:15:25 localhost pppoe[19361]: Sent PADT
Nov  3 00:15:25 localhost pppd[19360]: Modem hangup
Nov  3 00:15:25 localhost pppd[19360]: Connection terminated.
Nov  3 00:15:25 localhost pppd[19360]: Connect time 0.4 minutes.
Nov  3 00:15:25 localhost pppd[19360]: Sent 54 bytes, received 54 bytes.
Nov  3 00:15:25 localhost /etc/hotplug/net.agent: NET unregister event 
not supported
Nov  3 00:15:25 localhost pppd[19360]: Exit.

Und so weiter. Wieso passiert das und wie kann ich das vermeiden?
Grüße, Vasyl