For an internal project we need an application that acts as a virtual fax machine for incoming fax calls.
It has to prolong a incoming fax transmission up to one hour in e.g. slowing the speed of the transmission down to a minimum without losing the connection (buffering, not paket losing, etc.)
an application that simply maintains the tied connection between the two fax machines for a given time perhaps without getting involved in the underlying transmission.
The focus is rather set on not losing the existing connection between the two machines than on the actual fax data transmission
i.e. not the fax is the important feature. It is the ongoing open channel of the connection.
The application should be able to handle multiple connections.