First Connection - Timeout

Hi all,

We are using two Lancom Router to link our Company Buildings. They are using
dynamic VPN-Connections. All work fine.
The only bad Thing that attempts is, that Connection-Establishing take a
long time.
(ca. 20 Seconds)

When I want to start a Remote-Desktop Connection, the first Time I become an
Error that the Host-Computer is not avalible.When I reconnect , the
Remote-Desktop-
Connection works fine.

Question : Is there a Way to increase the Timeout for establishing a
Remote-Desktop
Connection ?

Mfg
Martin