Topic Last Modified: 2013-02-22

SIP trunk configuration settings define the relationship and capabilities between a Mediation Server and the public switched telephone network (PSTN) gateway, an IP-public branch exchange (PBX), or a Session Border Controller (SBC) at the service provider. These settings do such things as specify:

When you install Microsoft Lync Server 2013, a global collection of SIP trunk configuration settings is created for you. In addition, administrators can create custom setting collections at the site scope or at the service scope (for the PSTN gateway service, only).

To view SIP trunk configuration information by using Lync Server Control Panel

  1. In Lync Server Control Panel, click Voice Routing and then click Trunk Configuration.

  2. On the Trunk Configuration tab you will see a list of all your trunk configuration settings collection; for each collection you will see values for the Name, Scope, State, and Media bypass properties, along with the number of PSTN usages, Calling number rules, and Called number rules associated with the collection. To see additional details about a collection of trunk configuration settings, click the collection of interest, click Edit, and then click Show details. Note that you can view detailed information only for one collection of trunk configuration settings at a time.

Viewing SIP Trunk Configuration Information by Using Windows PowerShell Cmdlets

SIP trunk configuration settings can be viewed by using Lync Server PowerShell and the Get-CsTrunkConfiguration cmdlet. This cmdlet can be run either from the Lync Server 2013 Management Shell or from a remote session Windows PowerShell. For details about using remote Windows PowerShell to connect to Lync Server, see the Lync Server Windows PowerShell blog article "Quick Start: Managing Microsoft Lync Server 2010 Using Remote PowerShell" at

To view SIP trunk configuration information

  • To view information about all your SIP trunk configuration settings, type the following command in the Lync Server Management Shell and then press ENTER:

    Copy Code

    That will return information similar to this:

    Copy Code
    Identity								: Global
    OutboundTranslationRulesList			: {}
    SipResponseCodeTranslationRulesList	 : {}
    OutboundCallingNumberTranslationRulesList : {}
    PstnUsages								: {}
    Description							 :
    ConcentratedTopology					: True
    EnableBypass							: False
    EnableMobileTrunkSupport				: False
    EnableReferSupport						: True
    EnableSessionTimer						: False
    EnableSignalBoost						 : False
    MaxEarlyDialogs						 : 20
    RemovePlusFromUri						 : False
    RTCPActiveCalls						 : True
    RTCPCallsOnHold						 : True
    SRTPMode								: Required
    EnablePIDFLOSupport					 : False
    EnableRTPLatching						 : False
    EnableOnlineVoice						 : False
    ForwardCallHistory						: False
    Enable3pccRefer						 : False
    ForwardPAI								: False
    EnableFastFailoverTimer				 : True

For more information, see the help topic for the Get-CsTrunkConfiguration cmdlet.