Can the CT license be not configured on the AR that is connected to the VE1 interface of the TDM PBX

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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.

Other related questions:
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 AR connect to the PBX
A PBX often provides E1 (DB9) and FXO (RJ11) interfaces. E1 and FXO interfaces can connect to the AR.

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.

Can I connect the eSpace 8950 to a third-party PBX?
Huawei IP phones support the standard SIP protocol. They can register with a third-party PBX (SIP voice gateway) as long as the third-party PBX supports SIP registration.

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