Specifications

AVM ISDN TAPI Services for CAPI

ISDN-Controller B1 PCI v4.0 – 14 AVM System Architecture 71

AVM ISDN TAPI Services for CAPI

AVM ISDN TAPI Services for CAPI are drivers which can be

used to implement TAPI applications with AVM ISDN-Con-

trollers universally in Windows.

TAPI (Telephony Application Programming Interface) is a

telephony interface by Microsoft which allows telephony

programs to be controlled from within the Windows operat-

ing system. Using AVM ISDN TAPI Services for CAPI, phone

calls can be made or voice-mail systems controlled on the

computer. For instance, Windows’s “Phone Dialer” can be

used to establish connections to analog or ISDN phones.

The conversation then takes place using a sound card and a

headset or speakers and a microphone. Suitable TAPI ap-

plications can make use of numerous other features, such

as direct telephone dialing to communication partners list-

ed in programs such as Microsoft Outlook 2010/2007. In

the operating systems Windows 7, Windows Vista and

Windows XP, MS Fax service may also be used. Please read

the relevant sections in the Online Help for instructions.

TAPI applications based on the Microsoft standard TAPI 2.1

or higher can be used in combination with AVM ISDN-Con-

trollers and the AVM ISDN TAPI Services for CAPI.

14.4 CAPI SoftCompression X75/V42bis

CAPI SoftCompression X75/V42bis is a feature of the ISDN-

Controller B1 PCI v4.0 driver software. The ISDN-Controller

can perform data compression in accordance with the

V.42bis standard. This reduces transfer times and connec-

tion costs.

When the driver software is installed, CAPI SoftCompres-

sion X.75/V.42bis is activated by default. Upon request by

CAPI applications that support the V.42bis standard, data

compression is negotiated with the remote system for the

duration of a connection.

If you use older ISDN applications that do not support this

method of data compression, you have the option of ena-

bling data compression directly in the driver software of the

ISDN-Controller B1 PCI v4.0. This switches on data