Unexpected disconnects of isdn

[henrybb]

router-a:

interface BRI0/0

bandwidth 128

ip address 10.1.4.1 255.255.255.224

encapsulation ppp

isdn switch-type basic-net3

ppp authentication chap

ppp multilink

!

router-b£º

interface BRI0/0

bandwidth 128

ip address 10.1.4.2 255.255.255.224

encapsulation ppp

ip summary-address eigrp 1 10.2.0.0 255.255.0.0 5

dialer idle-timeout 300

dialer map ip 10.1.4.1 name 2600 0068867566833752

dialer load-threshold 200 either

dialer-group 1

isdn switch-type basic-net3

ppp authentication chap

ppp multilink

!

access-list 101 deny eigrp any any

access-list 101 permit ip any any

dialer-list 1 protocol ip list 101

!

The isdn line disconnect unexpected,do I need config dialer idle-timeout and dialer-group on router-a which is receiving incoming call?

Regards

Henry

[andyirving]

Dialer idle-timeout must be set on both ends of the DDR link, the default on all dialer capable interfaces is 120 seconds. Is this the time the link stays up after interesting traffic, do a show dialer interface or show caller timeout to see the timeout status.