The following issues and limitations are known at estos at the time of product release for ECSTA 6.0. We are currently working on a solution.

State of knowledge

April 2026

ECSTA for Alcatel-Lucent OmniPCX Enterprise

DescriptionAffected versionsStatus
Operational issue with estos ECSTA 7 for Alcatel-Lucent OmniPCX Enterprise running on the Microsoft Windows Server 2025 operating systemup to 7.1.1RESOLVED (7.1.2)


ECSTA for Avaya IP Office

DescriptionAffected versionsStatus

There are currently known limitations for the ECSTA Avaya IP Office. These are due to a behavior of the CSTA interface on the Avaya IP Office side.

  • Forwarding without consultation (Blind Transfer), before or after call acceptance.
    Destination party C is notified that party A is calling.
    Destination party C is not notified that the call was forwarded from party B.
  • Forward with consultation
    While the phone is ringing, party C is notified that party B is calling.
    After connecting, party C is notified that he is connected to party A. No information that the call was forwarded.
  • Call forwarding
    For the call forwarding destination C, it is shown that party A is calling.
    No information that the call was transferred because of call forwarding.
  • Conference
    For all parties "connected to <conference room number>" is displayed.
    If the first caller is an external caller, no party can be added to the conference (unless internal).
  • Pickup
    For the destination party, party A is displayed. No information about "forward from".
    There is no information in the journal about "Forwarded from" or "Forwarded to".
currentUNRESOLVED


ECSTA for Mitel MiVoice MX-ONE CSTA3

DescriptionAffected versionsStatus
  • MakeCall on a multiterminal line
    Execution of the MakeCall on a multiterminal line is not possible. Error message in theePhone.exe tool : lineMakeCall (0x80000048) Operation Failed
7.1.1.1398UNRESOLVED