June 2020 

ProCall EnterpriseV 6.3.0
PBX/Cloud PBXAvaya IP Office V 10.1 und 11
TSPAvaya TAPI 2 V.

ProCall Enterprise Client for Windows

ProCall Mobile App ***





Hang up

Answer call

Hold call

Call back

Reject call


Forward call (without answering)

Forward call (after answering)

Set up consultation call


Connect consultation call

Initiate second call (e.g. from Hold)

Accept second call

Reject second call

Forward second call (without answering)

Forward second call (after answering)

Second call on SIP line

Caller receives busy

Caller receives busy

Incoming call on SIP Line while active mobile phone call:

  • Answer call

mobile phone call on hold **

  • Reject

Incoming mobile phone call while active SIP line call:

  • Answer call

SIP line call on hold

SIP line call on hold

  • Reject

Create conference (3 participants)

Add further participant to conference call

Remove participant from conference call

Pickup call


  • TAPI – SIP (with or without feature code)

  • SIP – TAPI (with feature code)

  • SIP – SIP (with feature code)


Dial ringing tone

Call Forwarding

  • Provided by PBX via TAPI

  • via feature code *

  • provided by UCServer *2

Do not disturb (via presence)

Do not disturb (via line)


Function available
Availability or function planned
Not relevant
Not applicable due to technical limitations
Function not tested, full tests are pending

Call forwarding must have a terminal device as a destination, call forwarding to third party SIP subscribers is not supported by the telephone system.

*1Presentation of 'hold' state planned
*2Call forwarding by UCServer configurable for internal/external/all calls always or while busy
**Depending on the functions of the network provider
***Supported functions for SIP lines in ProCall Mobile Apps for connection via estos UCConnect

Release Note

Since estos has no influence on the further development of the supported telephone systems by the manufacturer, we cannot guarantee that the manual described above is also valid for future releases and e.g. other end devices without restrictions.