accessing communication services with COM-Port-devices

Some datacommunication services like internet, mail, fax, remote access (RAS)
are only accessible over a com-port device (analog-modem, external isdn-device).
In many cases, you can only connect to them via their own dialer-software, which
only allows to select com-ports for dialing up, instead of using the capa-
bilities of the capi-interface to connect to the service-provider.

This results in a problem, when trying to use such services over an isdn-
built-in device or an external device, let's say an isdn-router.

A simple way out of this dilemma is, to use a so called 'cfos'-driver. Explained
quite simplified, this driver converts the isdn-commands to at-commands and
vice versa, just like having an analog-modem attached to an unused com-port of
the WINDOWS-pc.

Now it's possible to use the device for your services. The specified driver
leans on your pc's locally installed 'capi'-.DLLs, which basically access the
isdn-device. When using remote-capi to access a network isdn device, like
a BinTec Brick, it's also possible to use this central device for connections,
without having installed a local isdn device.

There are several cfos-drivers available. We tried out the cfos-driver from
Lueders und Winkler under Microsoft Windows for Workgroups and Windows95
successfully (info at, using the BinTec BRI active
isdn-card (capi) and the BinTec Brick XM midrange modular ISDN router.
(Check out some isdn-magazine to find out local cfos-dealer).

1. verify, that the capi-DLLs are installed and ready
2. install an appropriate cfos-driver and direct the isdn-interface to an
unused COM-Port
3. direct the dialup connection of your software (internet, mail,...) to the
installed COM-Port (2.)


Wichtige Links

If you have comments or suggestions, send email  at support@BinTec.DE