Does the CT license need to be configured on the AR that is connected to an IP phone

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The CT license is not required when the IP phone connects to the AR router. The CT license is used to implement call transfer over a trunk. That is, calls received over one trunk are forwarded over another trunk.

Other related questions:
Does the CT license need to be configured on the AR that is connected to an IP phone
The CT license is not required when the IP phone connects to the AR router. The CT license is used to implement call transfer over a trunk. That is, calls received over one trunk are forwarded over another trunk.

Is the CT license required when the IP phone connects to the AR
The CT license is used to implement call transfer over a trunk. That is, calls received over one trunk are forwarded over another trunk. The CT license is not required when the IP phone connects to the AR.

The AR connects to the TDM PBX VE1. Is the CT license required
The CT license is used to implement call transfer over a trunk. That is, calls received over one trunk are forwarded over another trunk. The AR connects to the TDM PBX VE1 as follows: -When the AR working in SIP AG mode connects to the TDM PBX VE1, you only need to configure the value-added service package for voice services. -When the AR working in PBX mode connects to the TDM PBX VE1, users connected to the TDM PBX communicate with only local users. After the value-added service package for voice services is configured, you need to configure CM&BEST License. The CT license is not required. -When the AR working in PBX mode connects to the TDM PBX VE1, users connected to the TDM PBX communicate with external users through the AR. After the value-added service package for voice services is configured, you need to configure CT License.

Can the CT license be not configured on the AR that is connected to the VE1 interface of the TDM PBX
In V200R003 and earlier versions, the CT license is used to implement call transfer over a trunk. That is, calls received over one trunk are forwarded over another trunk. The AR connects to the VE1 interface of the TDM PBX: - When the AR working in SIP AG mode connects to the VE1 interface of the TDM PBX, you only need to configure the value-added service package for voice services. - When the AR working in PBX mode connects to the VE1 interface of the TDM PBX, users connected to the TDM PBX communicate with only local users. After the value-added service package for voice services is configured, you need to configure CM&BEST license. The CT license is not required. - When the AR working in PBX mode connects to the VE1 interface of the TDM PBX, users connected to the TDM PBX communicate with external users through the AR. After the value-added service package for voice services is configured, you need to configure the CT license.

Does the deep security defense function of an AR router need a license
Whether the deep security defense function of an AR router needs a license is subject to the router model and software version. For details, see the product manuals of corresponding software versions. For example, for a router with the V200R007 software, choose IPS Configuration > Configuration Notes and URL Filtering Configuration > Configuration Notes in the Security Configuration Guide > Deep Security Defense Configuration through the URL: AR100&AR120&AR150&AR160&AR200&AR1200& AR1600&AR2200&AR3200&AR3600 V200R007 Product Documentation.

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