pcAnywhere 10.5 modem-modem problem

[basspro]

Am trying to remote from XP Pro to W2K (host).
Modem answers.
On host PC in pcAnywhere dialogue box see:
Incoming call
Disconnected: no answer
Timeout looking for connection

On remote PC in pcAnywhere dialogue box see:
Dialing
Connecting
Remote party disconnected call

Any ideas? Any help greatly appreciated.

 

[basspro]

Additonal information...
Recently installed Cisco ASA 5510 with VPN client on certain laptops.

If a laptop contains the VPN client then that laptop cannot connect to a host via PCA.

If we use a laptop without the VPN client then that laptop can connect to the same host via PCA.