Unify’s phones typically come as HFA, TDM, or SIP variant. Each variant uses a different type of connection to the telephone system but to the user there is no visual difference between the three.

  • HFA: HiPath Feature Access. These are IP phones, using Unify’s proprietary IP communication protocol for the most feature rich phone variant available. The latest software levels also allow the phones to connect to the telephone system even if not on the same network – perfect for homeworkers and multi-site offices. In addition, HFA phones allow fail-over programming, adding resilience. HFA are the preferred variant.
  • TDM: Time Division Multiplexing. These digital phones are a long term favoured handset variant, but now HFA phones offer all the same features plus the option of fail-over and remote connection. Digital phones are full feature and best suited where traditional cabling is in place.
  • SIP: Session Initiated Protocol. SIP is a universal IP language used by most VoIP providers. SIP phones offer the same resiliency and remote access as HFA phones, with the standard SIP level feature set. Generally speaking, SIP phones are the most eco-friendly in both production and energy consumption.



Unify OpenScape CP200

The entry level phone in the CP range; the newest range from Unify. Feature rich, superior audio quality, and reliable. The design is driven by demand for phones to be less technical and more approachable. SIP variant available


Unify OpenScape CP400

The mid-level CP phone features a large display, programmable keys and optional key expansion modules. Interoperable with Circuit, the ground breaking web based communications platform from Unify. SIP variant available.


Unify OpenScape CP600

The CP powerhouse phone features HD voice, Circuit interoperability, Bluetooth 2.1 and 4.1 LE, and NFC for intelligent information sharing between desk phones and mobile phones. Additional key expansion modules are available. SIP variant available.


Unify OpenScape 35G

An upright phone designed for minimal desk footprint, the 35G is ideal for contact centre agents and knowledge workers. The OpenScape 35G features 3 line display, headset port and and integrated Gigabit Ethernet port as standard. HFA and SIP variant available.


Unify OpenScape 55G

The premier device for senior managers and executives, with a colour 320 x 240 LCD display, self labelling ports including shift layer, USB port, headset jack and integrated Gigabit Ethernet port as standard. HFA and SIP variant available.


Unify OpenStage 15

The entry level display handset for the OpenStage range is full feature, with 8 programmable LED buttons and a 2 line fixed display. HFA and SIP handsets also include advanced noise rejection and echo cancellation, with the option of 10/100 or Gigabit Ethernet. Available as HFA, TDM and SIP variant.


Unify OpenStage 30

An upgrade to the OpenStage 15 phone with additional features to include a headset port, additional feature keys and the option of additional key expansion modules; ideal for outbound call specialists. Available as TDM variant.


Unify OpenStage 40

The large display and self labelling keys make this the ideal phone for hotdesk areas, team workers and call centre staff. Also includes a headset port, with the option of additional key expansion modules. The HFA and SIP variant have integrated 10/100 or Gigabit Ethernet ports. Available as HFA, TDM and SIP variant.

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