Router keeps initiating session on aux port

Hi all,
I have a situation where I telnet to routerA. This router has, via its AUX port, a connection to routerB on the console-port.
So I can normally do a reverse telnet from routerA to routerB. (via the lo0 on port 2001 on routerA)
Problem is, routerA keeps trying to connect to routerB, thereby causing line 1 (for the AUX port) to be busy most of the time.
Ergo, I'm having trouble connecting to routerB (If I try a couple of times, I usually succeed after a while)
I can also confirm the login attempts when I do "monitor traffic line 1" (line 1 being the aux-port), and also in the ACS I see a lot of Failed login attempts from routerA with caller-id async
I don't understand why routerA is tryiing to login to routerB, nor how to stop it while leaving my access intact ofcourse
routerA
interface loopback0
ip address x.x.x.x x.x.x.x
line aux 0
session time-out 5
modem inout
transport preffered none
transport input all
transport output all
routerB
line con 0
logging synchronous
login local
Any suggestions would be welcome....

Hi Richard,
this has solved it indeed, thanks a lot! Though it's unclear why the routerA was setting up sessions in the first place, at least its not doing so anymore.
regards

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