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The audio transmission technologies that have been accumulated by Panasonic over the years enable clear sound for smooth, comfortable conversations.
Wide band voice, which supports the G.722 audio codecs, enables you to hear each other’s voice clearly for smooth communication.

In contrast to narrow band (except for G.722), which covers only part of the human voice range, wide band (G.722) covers a wider range.
Low-frequency bandwidth output is increased by the use of two types of cone paper to make it easy to hear even low-pitched voices with excellent clarity.

The use of a powerful magnet also raises the sound pressure across the entire bandwidth. This makes comparatively soft voices, which were previously difficult to hear, clear and easy to understand.

The large-capacity speaker box improves low-frequency reproduction (approximately 300 Hz). It also prevents the sounds generated by the speakers from leaking inside the cabinet, and outputs them to the front of the speaker unit to achieve a higher sound pressure level. By preventing the speaker output inside the cabinet from entering the microphone, echoes are greatly reduced.


Panasonic extensively studied customer usage conditions to create an easy-to-use design for the SIP Phones.
One-touch buttons exclusively for main functions let you instantly access the intended function without having to press several button sequences. Holding the line, calling, and other operations are easily done without having to memorize complicated steps.

Buttons that fit the curves of the fingers were developed in cooperative research with a university.

The back panel is designed to conceal the terminals, which also helps to prevent dust and other foreign matter from entering the terminal area and causing malfunctions.

All models feature large LCDs, and large fonts improve visibility.

Panasonic SIP Phone terminals feature extended handset cords, for more flexible usage.

Built-in Power Over Ethernet eliminates the need for a power adaptors, and reduces desktop clutter.
Rubber covers on the feet that contact the desk surface help prevent the phone from sliding for more comfortable use.

The angle of the display can be changed according to
your needs.

The phone can be mounted to a wall for more installation flexibility and space saving.
A built-in Electronic Hook Switch gives the SIP terminals access to the Plantronics range of wireless (DECT and Bluetooth) enabled headsets. No extra costs for adaptors, special cables or handset lifters required.

* Operation has been confirmed with a Platronics headset.
(KX-UT670/UT136/UT133 only)

The entire KX-UT range of SIP devices features support for provisioning, to provide “Plug and Play” device configuration. Provisioning allows automatic, quick device setup, using configuration files stored on a remote server.
Panasonic offers carrier partners access to a redirect server that allows the UT and TGP Series SIP solutions to be configured simply and effectively. All the end user has to do is plug in the phone, wait until it configures and then continue with their business.


The KX-UT Series saves energy even during standby mode and while calling. By using ECO mode, power consumption can be reduced even further.

* Input voltage when using an AC adaptor: 220V/50Hz or 120V/60Hz, connection only with the LAN port, value when using 100BASE-T. (However, only 10BASE-T is active when using UT ECO mode.)
* When using ECO mode, the PC port cannot be used. Also, the LAN port will be 10 Mbps.

The KX-UT113/123/133/136 provide solid UC solutions with support for industry leading systems such as Digium Asterisk and Broadsoft Broadworks.
The KX-UT113/123/133/136 terminals are certified for use with Digium's Asterisk. Asterisk is the world's most popular open source communications project. Combining Panasonic SIP terminals with Asterisk makes it simple to create and deploy a wide range of telephony services.

BroadSoft provides VoIP application software that enables the delivery of hosted telephony and multimedia services. Its award-winning technology empowers wireless, fixed line and cable carriers to deliver next-generation voice and multimedia applications.
