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Set-CsTrunkConfiguration

 

Topic Last Modified: 2012-03-25

Modifies an existing trunk configuration that describes the settings for a trunking peer entity such as a public switched telephone network (PSTN) gateway, IP-public branch exchange (PBX), or Session Border Controller (SBC) at the service provider.

Set-CsTrunkConfiguration [-Identity <XdsIdentity>] [-ConcentratedTopology <$true | $false>] [-Confirm [<SwitchParameter>]] [-Description <String>] [-EnableBypass <$true | $false>] [-EnableMobileTrunkSupport <$true | $false>] [-EnablePIDFLOSupport <$true | $false>] [-EnableReferSupport <$true | $false>] [-EnableSessionTimer <$true | $false>] [-EnableSignalBoost <$true | $false>] [-Force <SwitchParameter>] [-MaxEarlyDialogs <UInt32>] [-OutboundTranslationRulesList <PSListModifier>] [-RemovePlusFromUri <$true | $false>] [-RTCPActiveCalls <$true | $false>] [-RTCPCallsOnHold <$true | $false>] [-SipResponseCodeTranslationRulesList <PSListModifier>] [-SRTPMode <Required | Optional | NotSupported>] [-WhatIf [<SwitchParameter>]]
Set-CsTrunkConfiguration [-ConcentratedTopology <$true | $false>] [-Confirm [<SwitchParameter>]] [-Description <String>] [-EnableBypass <$true | $false>] [-EnableMobileTrunkSupport <$true | $false>] [-EnablePIDFLOSupport <$true | $false>] [-EnableReferSupport <$true | $false>] [-EnableSessionTimer <$true | $false>] [-EnableSignalBoost <$true | $false>] [-Force <SwitchParameter>] [-Instance <PSObject>] [-MaxEarlyDialogs <UInt32>] [-OutboundTranslationRulesList <PSListModifier>] [-RemovePlusFromUri <$true | $false>] [-RTCPActiveCalls <$true | $false>] [-RTCPCallsOnHold <$true | $false>] [-SipResponseCodeTranslationRulesList <PSListModifier>] [-SRTPMode <Required | Optional | NotSupported>] [-WhatIf [<SwitchParameter>]]

Use this cmdlet to modify a trunking configuration applicable to PSTN gateway entities. Each configuration contains specific settings for a trunking peer entity such as a PSTN gateway, IP-PBX, or SBC at the service provider. These settings configure such things as whether media bypass is enabled on this trunk, whether real-time transport control protocol (RTCP) packets are sent under certain conditions, and whether to require secure real-time protocol (SRTP) encryption.

Who can run this cmdlet: By default, members of the following groups are authorized to run the Set-CsTrunkConfiguration cmdlet locally: RTCUniversalServerAdmins. To return a list of all the role-based access control (RBAC) roles this cmdlet has been assigned to (including any custom RBAC roles you have created yourself), run the following command from the Windows PowerShell prompt:

Get-CsAdminRole | Where-Object {$_.Cmdlets –match "Set-CsTrunkConfiguration"}

 

Parameter Required Type Description

Identity

Required

XdsIdentity

A unique identifier that includes the scope of the trunk configuration. Trunk configurations can exist at the Global scope, the Site scope, or at the Service scope for a PSTN Gateway service. For example, site:Redmond (for site) or PstnGateway:Redmond.litwareinc.com (for service).

Instance

Optional

TrunkConfiguration

Allows you to pass a reference to an object to the cmdlet rather than set individual parameter values.

This parameter requires an object of type Microsoft.Rtc.Management.WritableConfig.Settings.TrunkConfiguration.TrunkConfiguration, which can be retrieved by calling the Get-CsTrunkConfiguration cmdlet.

ConcentratedTopology

Optional

Boolean

The value of this parameter determines whether there is a well-known media termination point. (An example of a well-known media termination point would be a PSTN gateway where the media termination has the same IP as the signaling termination.) Set this value to False if the trunk does not have a well-known media termination point.

Default: True

Description

Optional

String

A string describing the purpose of the trunk configuration.

EnableBypass

Optional

Boolean

The value of this parameter determines whether media bypass is enabled for this trunk. Set this value to True to enable bypass. Note that in order for the media bypass to work successfully, certain capabilities must be supported by PSTN gateways, SBCs, and PBXs, including:

- The ability to receive forked responses to an Invite.

- Lync Server 2010 clients and the media termination point must be able to communicate directly without going through a Mediation Server.

- The gateway subnet must be defined as being at the same site as the client’s subnet or, if at a different site, the sites must not be separated by WAN links with constrained bandwidth.

Media bypass can be enabled only under the following circumstances:

- The ConcentratedTopology parameter is set to True

- The EnableReferSupport parameter is set to False and RTCPActiveCalls and RTCPCallsOnHold are set to False, or EnableReferSupport is set to True

Note that if EnableBypass is True and EnableReferSupport is False, bypass calls that are subsequently transferred will become non-bypass.

For media bypass to work for a particular trunk, it needs to be enabled globally and also for the trunk in question. Use the New-CsNetworkMediaBypassConfiguration cmdlet to enable media bypass globally.

Default: False

EnableMobileTrunkSupport

Optional

Boolean

Defines whether the service provider is a mobile carrier.

Default: False

EnablePIDFLOSupport

Optional

Boolean

Defines whether to route emergency calls with Presence Information Data Format Location Object (PIDF-LO) through the defined gateway. Set this parameter to True if emergency calls are to be routed to a certified emergency services provider. (The location will be transmitted with the call.)

Default: False

EnableReferSupport

Optional

Boolean

Defines whether this trunk supports receiving Refer requests from the Mediation Server.

Media bypass can be enabled only under the following circumstances:

- The ConcentratedTopology parameter is set to True

- The EnableReferSupport parameter is set to False and RTCPActiveCalls and RTCPCallsOnHold are set to False, or EnableReferSupport is set to True

Note that if EnableBypass is True and EnableReferSupport is False, bypass calls that are subsequently transferred will become non-bypass.

Default: True

EnableSessionTimer

Optional

Boolean

Specifies whether the session timer is enabled. Session timers are used to determine whether a particular session is still active.

Note that even if this parameter is set to False, session timers can be applicable if the remote connection has session timer enabled. In such a case, the Mediation Server will reply to session timer probes from the remote entity.

Default: False

EnableSignalBoost

Optional

Boolean

When this parameter is set to True the PSTN gateway, IP-PBX, or SBC at the service provider will boost the audio volume in voice streams that are sent to the Mediation Server or Microsoft Lync Server 2010 clients. If this value is set to False, audio will be boosted either at the Mediation Server (for non-bypass calls) or in Lync Server 2010 clients (for bypass calls).

Default: False

MaxEarlyDialogs

Optional

Int64

The maximum number of forked responses a PSTN gateway, IP-PBX, or SBC at the service provider can receive to an Invite that it sent to the Mediation Server.

Default: 20

OutboundTranslationRulesList

Optional

PSListModifier

A collection of phone number translation rules that apply to calls handled by Outbound Routing (calls routed to PBX or PSTN destinations).

While this list and these rules can be modified directly with this cmdlet, we recommend that you modify the outbound translation rules with the Set-CsOutboundTranslationRule cmdlet. Set-CsOutboundTranslationRule will modify the rule, and these modifications will be automatically reflected in the trunk configuration. To modify the trunk configuration by adding a new outbound translation rule, call the New-CsOutboundTranslationRule cmdlet; the new rule will be added to the trunk configuration with the matching scope.

RemovePlusFromUri

Optional

Boolean

Setting this parameter to True will cause the Mediation Server to remove leading plus signs (+) from Uniform Resources Identifiers (URIs) before sending them on to the service provider.

Default: False

RTCPActiveCalls

Optional

Boolean

This parameter determines whether RTCP packets are sent from the PSTN gateway, IP-PBX, or SBC at the service provider for active calls. An active call in this context is a call where media is allowed to flow in at least one direction. If RTCPActiveCalls is set to True, the Mediation Server or Lync Server client can terminate a call if it does not receive RTCP packets for a period exceeding 30 seconds.

Note that disabling the checks for received RTCP media for active calls in Lync Server elements removes an important safeguard for detecting a dropped peer and should be done only if necessary.

Default: True

RTCPCallsOnHold

Optional

Boolean

This parameter determines whether RTCP packets continue to be sent across the trunk for calls that have been placed on hold and no media packets are expected to flow in either direction. If Music on Hold is enabled at either the Lync Server client or the trunk, the call will be considered to be active and this property will be ignored. In these circumstances use the RTCPActiveCalls parameter.

Note that disabling the checks for received RTCP media for active calls in Lync Server elements removes an important safeguard for detecting a dropped peer and should be done only if necessary.

Default: True

SipResponseCodeTranslationRulesList

Optional

PSListModifier

A list of SIP response code translation rules that apply to response codes received from a PSTN gateway, IP-PBX, or SBC at the service provider. These rules allow the administrator to map SIP response codes with values between 400 and 699 received over a trunk to new values more consistent with Lync Server.

You can create this list and corresponding rules directly with this cmdlet. However, we recommend that you create the SIP response code translation rules by calling the New-CsSipResponseCodeTranslationRule cmdlet. That cmdlet will create the rule and assign it to the trunk configuration with the matching scope.

SRTPMode

Optional

SRTPMode

The value of this parameter determines the level of support for SRTP to protect media traffic between the Mediation Server and the PSTN gateway, IP-PBX, or SBC at the service provider. For media bypass cases, this value must be compatible with the EncryptionLevel setting in the media configuration. Media configuration is set by using the New-CsMediaConfiguration and Set-CsMediaConfiguration cmdlets.

Valid values:

- Required: SRTP encryption must be used.

- Optional: SRTP will be used if the service provider supports it.

- NotSupported: SRTP encryption is not supported and therefore will not be used.

Note: SRTPMode is used only if the gateway is configured to use Transport Layer Security (TLS). If the gateway is configured with Transmission Control Protocol (TCP) as the transport, SRTPMode is internally set to NotSupported.

Default: Required

Force

Optional

SwitchParameter

Suppresses any confirmation prompts that would otherwise be displayed before making changes.

WhatIf

Optional

SwitchParameter

Describes what would happen if you executed the command without actually executing the command.

Confirm

Optional

SwitchParameter

Prompts you for confirmation before executing the command.

Microsoft.Rtc.Management.WritableConfig.Settings.TrunkConfiguration.TrunkConfiguration object. Accepts pipelined input of trunk configuration objects.

This cmdlet does not return a value; it modifies an object of type Microsoft.Rtc.Management.WritableConfig.Settings.TrunkConfiguration.TrunkConfiguration.

-------------------------- Example 1 ------------------------

Set-CsTrunkConfiguration -Identity site:Redmond -EnableBypass $True

This example modifies a trunk configuration with the Identity site:Redmond to enable media bypass. Media bypass is enabled by assigning the value $True to the EnableBypass parameter. The remaining properties for this configuration will retain their existing values.

-------------------------- Example 2 ------------------------

Set-CsOutboundTranslationRule -Identity site:Redmond/OTR1 -Translation '$1'

This example modifies an outbound translation rule defined for the trunk configuration with the Identity site:Redmond. Notice that we don’t actually make a call to the Set-CsTrunkConfiguration cmdlet to make this change. Changes made using Set-CsOutboundTranslationRule will be automatically reflected in the trunk configuration with an Identity matching the scope portion of the Identity of the outbound translation rule.

-------------------------- Example 3 ------------------------

Get-CsTrunkConfiguration -Filter site:* | Set-CsTrunkConfiguration -SRTPMode "Optional"

Example 3 sets the SRTPMode for all trunk configurations defined at the site scope to Optional. The first part of the command is a call to the Get-CsTrunkConfiguration cmdlet that uses the Filter parameter to retrieve all trunk configurations with an Identity beginning with site:, meaning all trunk configurations defined at the site level. This collection of configurations is then piped to the Set-CsTrunkConfiguration cmdlet, which sets the SRTPMode property of each to Optional.

-------------------------- Example 4 ------------------------

Set-CsTrunkConfiguration -Identity site:Redmond -EnablePIDFLOSupport $True

Example 4 modifies a trunk configuration with the Identity site:Redmond to enable PIDF-LO support. By default the EnablePIDFLOSupport parameter is False. In this example we’ve set the value to True to enable location support for emergency calls. You must set EnablePIDFLOSupport to True in order for location information to be sent to the trunk by the outbound routing application.

 
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