CallControlGateway – Functions

How does the ESTOS CallControlGateway work?

CallControlGateway (CCG) serves as middleware that translates TAPI functions into SIP and uaCSTA.

With most enterprise telephony systems supporting the Microsoft TAPI standard, compatibility is virtually guaranteed. The same applies to commonly used CSTA-compliant telephony systems that do not support SIP or uaCSTA. These systems can also be integrated with the CCG via the ESTOS ECSTA product family, a series of CSTA to TAPI bridges.

Telephony functions

The following functions are available via CSTA over SIP Call Control Protocol (ECMA 269/323 and TR/87):

Make Call
Answer Call
Clear Call
Deflect Call
Hold Call
Retrieve Call
Consultation Call
Single Step Transfer
Alternate Call
Generate Digits DTMF
Reconnect Call
Set Forwarding
Conference*
Set Do Not Disturb*
Get Do Not Disturb Status*
Get Forwarding Status*

*not supported by Lync/OCS

Server-sided Features

Installation with Windows Installer (MSI)
Central administration
Remote configuration & administration
Microsoft Active Directory Integration
Support for WTS / Citrix MetaFrame
Cluster Load Balancing compatible
Unanswered phone calls in absence per email
MTLS-Encoding between CCG and Lync Server 2010

In combination with ESTOS TapiServer

Individuel email confirmation by unanswered phone calls in absence (per user configureable)
MultiSite scenario (across different locations)
MultiVendor scenario (different manufactures)