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Which Telephony Connector should I choose?

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Circuit Telephony Connectors can be deployed as Hosted Universal Telephony Connector, Premise Universal Telephony Connector, Advanced Telephony Connector or OpenScape Business Connector.

All types of Telephony Connectors are available via our monthly packages “Team”, “Professional” and “Enterprise” (https://www.circuit.com/pricing). UTC and ATC are also, available, at the time-limited Field Trials. Service Provides can also request and get custom packages with the Telephony integration.

In order to best choose the most suitable deployment please read the following feature description.

Advanced Telephony Connector (ATC)

The Advanced Telephony Connector solution is the most suitable for large enterprises. It has a tight integration with Unify PBXs, for best user acceptance and consistent feature set.

Circuit registers as SIP party on the voice platform’s ONS. This latter service allows for controlling device availability and provides support for pushing or pulling a call between various devices.

ATC offers remote control (CTI) of the desk phone in the Circuit client, allowing you to dial, accept, reject, transfer, hold or resume, alternate, send DTMF, merge (conference), forward or hand over a call. You can pull a call from other Circuit clients or the desk phone, as well as push a call to the desk phone or another phone (e.g., mobile phone).

The Advanced Telephony Connector:

  • provides deep integration targeting Unify voice platforms

  • works with the latest versions of OpenScape platform: OpenScape Voice (V8R1 or later) and OpenScape 4000 (V7R2 or later)

  • allows using Circuit as an OpenScape platform soft client

  • allows using your existing OpenScape phone number

  • allows making and receiving phone calls via Circuit

  • allows routing the incoming phone calls to the Circuit clients, desk phone, or your mobile phone, depending on the device status and availability

  • provides device presence based on the ONS (Circuit and desk phone)

  • offers the following Call Control features:

    • Dial

    • Accept, reject, drop a call

    • DTMF
    • Hold and retrieve
    • Mute/Unmute (this is only available when Circuit is used as a soft phone)
    • Blind Transfer
    • Consultation Call, Warm Transfer, Alternate
    • Accept a second call
  • offers the following features to support desk phone usage with remote control (CTI/3rd Party Call Control):

    • Accept a second incoming call

    • Consultation Call, Warm Transfer, Alternate
    • Merge two calls to a conference on the PBX.
  • allows moving a call to or from other Circuit clients, the desk phone, mobile phone (i.e., 3rd Party Call Control)

  • allows forwarding a call (to the mobile phone or other Alternative number)

  • allows all phone calls to be listed in your call history view even when you are signed out.

  • offers conferencing and voicemail features.

OpenScape Business Connector

The OpenScape Business Connector solution is the most suitable for small and medium sized enterprises that already use OpenScape Business v2 for Unified Communication and Collaboration.

With the OpenScape Business Connector, a very simple connection to the Circuit cloud is available: a dynamic SIP trunk registration. This requires a Circuit domain specific API key (or Token) to be entered in the Web Based Administration (WBM) of the OpenScape Business. This API key can be obtained in self service from the Circuit domain administration so that the connector can be setup in few minutes.

The OpenScape Business Connector:

  • allows for low effort Circuit Telephony setup

  • makes use of Circuit Cloud Nodes (hUTC) and load on the OpenScape Business is, thus, avoided
  • provides Circuit Telephony user maintenance from the OpenScape Business WBM

  • allows preserving existing phone number with ONS support

  • offers dual ringing via its ONS support

  • allows moving calls between Circuit clients

  • allows all phone calls to be listed in your call history view (on web client and Desktop App) or in your phone calls view (mobile client).

  • allows making and receiving phone calls via Circuit.

  • allows the incoming phone calls to be routed by OpenScape Business to Circuit, to phone devices or both

  • provides device presence based on the ONS (Circuit and desk phone)

  • offers the following Call Control features:

    • Dial

    • Accept, reject, drop a call

    • DTMF
    • Hold and retrieve
    • Mute/Unmute (this is only available when Circuit is used as a soft phone)
    • Blind Transfer
    • Consultation Call, Warm Transfer, Alternate
    • Accept a second call
    • Merge two calls to a conference (OpenScape Business V2R7 and higher)

    • Pull calls from other Circuit clients or deskphone (OpenScape Business V2R7 and higher)

    • Push call to deskphone (OpenScape Business V2R7 and higher)

  • offers conferencing features

The OpenScape Business Connector requires no licence.

Universal Telephony Connector (UTC)

The Universal Telephony Connector solution is designed to support mainly 3rd party Voice platforms (VoIP or hybrid platforms that provide a generic SIP trunk as an interface). Its hUTC model allows low cost entry to Circuit telephony and no SIP registration on the platform.

Since it does not have solution dependency, it works with newer PBXs, as well as with the older PBXs, allowing integration with SIP gateways, third party PBX SIP trunks, or even Cloud PBX SIP trunks.

UTC is available to be deployed on premise (pUTC) or hosted in our data centre (hUTC).

The Universal Telephony Connector (hUTC or pUTC):

  • targets mainly customers with a 3rd party PBX

  • connects to any phone system with generic SIP trunk

  • allows the use of a new Circuit number in addition to your existing PBX number

  • allows making and receiving phone calls via Circuit.

  • allows the incoming phone calls to be routed by PBX to Circuit, to phone devices or both (if supported by the PBX)

  • offers Call Control features such as:

    • Dial

    • Accept, reject, drop a call

    • DTMF
    • Mute/Unmute
  • allows moving calls between Circuit clients

  • allows all phone calls to be listed in your call history view.

  • offers conferencing features.

The Universal Telephony Connector solution is suitable for small and medium-sized business. The on premise version is very recommended for more that 100 users in a site so that call quality and network usage are optimized.

The on premise installation of the Universal Telephony Connector requires specific OpenScape SBC licenses.

Subscriber Telephony Connector (STC)

The Subscriber Telephony Connector (STC) solution is an alternative solution to support 3rd party voice platforms (VoIP or hybrid platforms that provide an option to register as SIP end point). It turns the users of Circuit client into SIP subscribers that register on the voice platform. The connector supports all the telephony features of a softphone.

The STC is designed for and it is only available for ITSPs and very large enterprises in projects which include a validation of the functionality with their voice platforms. While the STC can support any amount of users it, also, allows for ITSPs a lowest cost support for mass business with small customers.

The STC is designed to be setup in co-location with the voice platform (e.g. at the ITSP's Cloud PBX).

The Subscriber Telephony Connector:

  • targets mainly large enterprises (franchising) with a 3rd party PBX

  • connects to any phone system that supports SIP options
  • allows the use of the existing PBX phone numbers

  • allows making and receiving phone calls via Circuit.

  • doesn’t require any routing configuration to route calls on PBX, since Circuit client registers directly on the PBX

  • allows the incoming phone calls to be routed by PBX to Circuit, to phone devices or both (if supported by the PBX)

  • offers the following Call Control features (if supported by the PBX):

    • Dial

    • Accept, reject, drop a call

    • DTMF
    • Mute/Unmute
    • Blind Transfer
    • Consultation Call, Warm Transfer, Alternate
    • Accept a second call
    • Merge two calls to a conference in Circuit

  • allows moving calls between Circuit clients

  • offers voicemail feature

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