Unify Phones – Advanced Tech
Unify 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.
Discontinued Unify Phones
| Phone Series [1] | Model Variants (Discontinued/Legacy) | Notes & Replacement |
|---|---|---|
| OpenScape CP (IP) | CP100, CP200, CP205 | Recently discontinued. Replaced by CP110 and CP210. |
| OpenStage SIP | 15, 20, 40, 60, 80 | Phase-out date was June 30, 2022. |
| OpenStage TDM | 10T, 15T, 30T, 40T, 60T, 80T | Legacy digital handsets; replaced by CP series. |
| OpenScape IP | 35G, 35G Eco, 55G | Older desk phone generations; legacy status. |
Unify Phones
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OpenScape Desk Phone CP700 (SIP & HFA) Unify Phones

UNIFY brings decades of experience and a thoughtful approach to design and feature for the OpenScape Desk Phone CP family resulting in:
- Ease of Use
- Completely new, intuitive User Interface
- Tidy key layout with clear function division
- Colored LEDs in the function keys to display statuses
- Keys with backlight even visible in bright surroundings
- New hardware architecture for improved performance
- Mechanical hook switch with robust, clear feedback
- Concave keys shape with an intuitive pressure point
- Built-in stand with two different angles (flat and steep)
- Key module with new display technology, connector without cable
- Adaption and Integration
OpenScape Desk Phone CP600 (SIP & HFA) Unify Phones
Designed for The collaborative workspace

Key features include:
- Tiltable graphical TFT display, 4,3″ (480*272 pixel), colour
- LED backlight (white)
- 5 context sensitive soft keys
- 2 fixed keys (menu / out office)
- 4-way navigator, plus OK-key
- 3 audio keys
- 10/100/1000 Base-T Ethernet switch
- PoE
- Energy Efficient Ethernet
- Bluetooth
- SD card interface
- Wall mountable
- Key Module shown optional
OpenScape Desk Phone CP400 (SIP & HFA) Unify Phones
Designed for Mid-range budget conscious professional users

Key features include:
- Tiltable graphical TFT display, 3.7″ (240*120 pixel), monochrome
- LED backlight (white)
- 4 context sensitive soft keys
- 2 fixed keys (menu / out office)
- 16 free programmable LED keys
- 4-way navigator, plus OK-key
- 3 audio keys
- 10/100/1000 Base-T Ethernet switch
- PoE
- Energy Efficient Ethernet
- Bluetooth
- SD card interface
- Wall Mountable
- Key Module shown optional
OpenScape Desk Phone CP110 C2 (SIP & HFA) Unify Phones
The OpenScape Desk Phone CP110 is the ideal device for entry-level workplace scenarios. It has a large display, a headset connector with DHSG/EHS functionality, two fixed function keys and three soft-label keys. These soft label keys can be configured as function-, name or line keys. It also includes an internal Gigabit Ethernet switch and supports the SIP / HFA protocols. In addition, it is wall-mountable with a wall mounting kit. It also supports two stand position options that are suitable for many desktop needs.

Display
- 2.8” graphical three-line display (162 x 48 pixels), monochrome
- Signaling LED (red)
Keys
- 3 freely programmable function keys with Soft Label on LCD Pre-assignment: Call Log, Forward, Redial
- 2 fixed function keys: Menu/Settings, Messages
- 3-way navigator plus OK key
- 3 audio function keys (mute/loudspeaker/headset)
- Volume +/-
- Open listening/hands free speaking (full duplex)
- Headset port (DHSG/EHS)
- 10/100/1000 Base-T Ethernet Switch
- IEEE 802.3az Energy Efficient Ethernet
- IEEE 802.3af Power over Ethernet, class 1
Placement
- Base, two different placement angles
- Wall mountable
OpenScape Desk Phone CP410 C2 (SIP & HFA) Unify phones

- OpenScape Desk Phone CP410 C2 (SIP & HFA)
OpenScape Desk Phone CP410
The ideal device for the demanding user. The high-resolution and high-contrast color TFT display shows context-sensitive states and actions beyond the pure labelling. These can be used with the 5 keys to the right of the display. These keys have an LED status indicator to guide the user in operation. Like the other phones in this device model family, it also offers the 6 fixed function keys, of which 4 keys also have an LED status. The OpenScape Desk Phone CP410 also offers Gigabit Ethernet and Energy Efficient Ethernet. Up to 4 KM410 or KM710 key modules can be connected; these fulfil the requirements for many freely programmable keys. The USB interface is provided to connect USB headsets and the CP10 WiFi stick.
Display
Tiltable graphical TFT display, 3.5” (480*320 pixel), color
LED backlight (white)
Signaling LED (red, green, amber)
Keys
5 context sensitive soft keys with LED
6 fixed function keys (menu/presence/voicemail/hold/transfer/conference)
4-way navigator, plus OK-key
3 audio keys (Mute/Speaker/Headset) with LED
Volume control +/-
Connectivity
Headset port (DHSG/EHS)
10/100/1000 Base-T Ethernet Switch
USB Interface
Up to 4 Key Module KM710 or 4 Key Module KM410
IEEE 802.3az Energy Efficient Ethernet
IEEE 802.3af Power over Ethernet, class 2connectable Key Modules using PoE: 1
(please use a power supply to connect up to four key modules)
Placement
Base, two different placement angles
Wall mountable
OpenScape Desk Phone CP710 C2 (SIP & HFA) Unify Phones
The CP710 is designed for the professional workplace. The consistently paperless design is particularly suitable for mobile workers or environments. With six permanently visible free programmable keys the device is optimized for team or multi line usage. Additionally six Favourites allows the user to program important numbers and functions.
Up to four connectable key modules KM710 or KM410 satisfies the need of many free programmable keys.
The high resolution display of KM710 Unify phones shows the key label and additional information like status and action icons. The key module is highly recommended for multiline usage. It provides interactive line information as well as status information using the display and the three color key LED.
The CP710 is equipped with a new Bluetooth 5.0 function. Bluetooth headsets are supported in HD audio quality. The new ‘Bluetooth Proximity’ feature allows to automatically lock the phone when the headset or other Bluetooth device is removed from the phone range. The built-in NFC chip simplifies the Bluetooth pairing with compatible Smartphones. The phone can operate as free speaking unit for smartphones. The USB interface is provided to connect USB headsets and the CP10 WiFi stick.

Display
- Tiltable graphical TFT display, 5.0” (1280*720 pixel), color
- LED backlight (white)
- Signaling LED (red, green, amber)
Keys
- 6 permanent visible free programmable keys with LED and context sensitive, two line label
- 6 context sensitive soft keys with LED
- 6 fixed function keys (menu/presence/voicemail/hold/transfer/conference)
- 4-way navigator, plus OK-key
- 3 audio keys (Mute/Speaker/Headset) with LED
- Volume control +/-
Connectivity
- Headset port (DHSG/EHS)
- 10/100/1000 Base-T Ethernet Switch
- USB Interface
- Bluetooth 2.1 BR/EDR and Bluetooth 5.0 LE (dual mode device)
- NFC
- Up to 4 Key Module KM710 or 4 Key Module KM410
- IEEE 802.3az Energy Efficient Ethernet
- IEEE 802.3af Power over Ethernet, class 3
- connectable Key Modules using PoE for USB load max. 120mA: max 4pcs. / for USB load max. 500 mA: max. 2 pcs.
Placement
- Base, two different placement angles
- Wall mountable
Accessories
Key Module KM410 Unify Phones

- Optional paper labeled Key Module for OpenScape Desk Phone CP410 or CP710
- 16 free programmable feature keys with LEDs
- Max. 4 modules per phone
Key Module KM710 Unify Phones

- Optional display Key Module for OpenScape Desk Phone CP410 or CP710
- Two high contrast TFT displays (monochrome), each with 240 x 320 pixel resolution
- possible to program up to 24 features on the KM710 via
- 12 physically freely programmable feature keys with LEDs
- 1 layer shift key, to select two layers
- Max. 4 modules per phone
WiFi Stick CP10 for Unify Phones

- USB WiFi/WLAN stick for CP210, CP410 and CP710
- operates as a WiFi client
- 2.4/5GHz Dual Band
- Compatible with 802.11ac, 11a, 11b, 11g and 11n
- Encryption standard
- None
- WEP
- WPA/WPA2-Personal
- WPA/WPA2-Enterprise
- WPA2-Personal
- WPA2-Enterprise
- WPA2/WPA3-Personal
- WPA3-Personal
- Encryption method
- 64/128/256 bits
- WPS, PSK, TKIP, AES-CCMP, SAE
- Authentication protocols
- PEAPv0/EAP-MSCHAPv2
- EAP-TLS
- Authentication type
- 802.1x
Unify Phones Digital
Openscpae desk phone CP200T Digital Unify Phones

- Graphical display, 2 lines (192*48 pixel), monochrome
- Notification LED
- 4 free programmable feature keys with LED (green),
- 5 fixed feature keys, 3 with LED (red or green)
- 4-way navigator, plus OK-key
- 3 audio keys (Mute/Speaker/Headset) with LED (red or green)
- Volume control +/-
- Open listening / Hands-free talking (Full-duplex)
- Headset port (DHSG/EHS)
- Wall mountable
Openscpae desk phone CP400T Digital Unify Phones

- Tiltable graphical display, 3,7″ (240*120 pixel), monochrome
- LED backlight (white)
- Notification LED
- 4 context sensitive soft keys with LED (green)
- 2 fixed feature keys (Menu/Call Forwarding)
- 16 free programmable feature keys with LED (green)
- 4-way navigator, plus OK-key
- 3 audio keys (Mute/Speaker/Headset) with LED (red or green)
- Volume control +/-
- Open listening / Handsfree talking (Full-duplex)
- Headset port (DHSG/EHS)
- Up to 2 Key Module 400 optional
