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ShoreTel CSTA Server
Technical Specifications

System requirements

  • ShoreTel release 12 or higher
  • Microsoft Lync Server 2013 or Microsoft Lync Server 2010
  • One Microsoft Lync 2013 Server Plus CAL per RCC user for Lync 2013, or one Microsoft Lync 2010 Server Plus CAL per RCC user for Lync 2010


  • ShoreTel CSTA Server requires one client license per Microsoft RCC-enabled Lync user

CSTA controls availability in Microsoft UC Versions

CSTA control Lync 2010 Lync 2013
Make call
Receive call (1)
Caller ID
Call waiting (2)
Call hold (3)
Call retrieve
Alternate call
Single step transfer
Consultative transfer
DTMF digits generation (4)
Call forward/call redirect
Missed call notification
Reply with IM
  1. The RCC-enabled user can make and receive calls using Lync to control their ShoreTel IP phone but cannot place anything but PC-to- PC voice calls through the Lync softphone. When the RCC-enabled user accepts the call through Lync, the ShoreTel IP phone will go off-hook and the speakerphone will be activated.
  2. The RCC enabled user gets a toast saying a new call is coming
  3. The RCC enabled user can handle multiple calls at a time. Every call is represented by a separate communication window. The user can place any communication on hold during the conversation period.
  4. Lync has option to send the DTMF digit over trunk calls using an on-screen keypad.