Supported telephony functions for ProCall NEX

State of knowledge

June 2025

ProCall NEX	ProCall NEX 2506.0 based on ProCall 8 V 8.8
PBX/Cloud PBX	Voice Services

Action	ProCall Client for Windows		ProCall mobile app SIP extension
Action	TAPI	SIP extension	Android	iOS
Dial	☑	☑	☑	☑
Hang up	☑	☑	☑	☑
Answer call	○	☑	☑	☑
Hold call	☐	☑
Call back	☑	☑
Reject call	☑	☑	☑	☑
Forward call (without answering)	☑	☑
Forward call (after answering)	☑	☑
Set up a consultation call	☐	☑
Toggle	☐	☑
Connect a consultation call	☑	☑
Forward second call (without answering)	○	☑
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 is terminated	☑ SIP line call on hold
Reject			☑	☑
Create a conference call (3 participants)	☐	☑
Add a further participant to a conference call	☐	☐
Remove a participant from a conference call	☐	☐
Pickup call
TAPI - TAPI	☑	☑
TAPI - SIP	☑	☑
SIP - TAPI	☑	☑
SIP - SIP	☑	☑
DTMF	☑	☑	☑	☑
Dial ringing tone	○	○

Set Call forwarding	☑	☑
Call protection / DoNotDisturb
via presence	☑	☑
via line	☑	☑	☑	☑

Legend

☑	Function available
☐	Availability or function planned/in realization
—	Not relevant
○	Not applicable due to technical limitations
◊	Function not tested, full tests are pending
^*1	Presentation of hold state planned
^*2	Call 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

Version note

Since estos has no influence on the further development of the supported telephone systems by the manufacturer, we cannot guarantee that the instructions described above will also be fully valid for future releases and e.g. other end devices.

Further information

ProCall NEX