Cisco UC Phone 9971

IP videophone Cisco Unified IP Phone 9971 is a leading multifunctional and multimedia user device, ensuring high quality of voice transfer, video and support to various applications. The device has a built in switch with two Ethernet 10/100/100M/bit ports for connection to LAN and PC, additionally it has a built in 802.11 a/b/g/ module, which ensures additional types of connection. Cisco 9971 supports the most used voice and video codec, thus, providing the high quality of communication. It has a touch sensitive high resolution display, good design and convenient user interface, simplifying the interactions with this phone.

The phone has wide range of accessories, including wireless headsets, Cisco Unified Video Camera, allowing increasing the effectiveness of IP videophone Cisco 9971. Videophone Cisco 9971 supports XML and Java MIDIet-based applications. This device is compatible with the latest version of Cisco Unified Communications Manager.

Technical characteristics of IP phone 9971:

Headset radius up to 8m 2 USB for Cisco Unified Video Camera or wireless headset LLDP-PoE, CDP , IEEE Power over Ethernet 802.3af and 802.3at Local power supply with help of CP-PWR-CUBE-4 or CP-PWR-INJ power injector 5inch color display HD sound 2 x RJ-45 10/100/1000 BASE-T Ethernet 802.11a/b/g Wi-Fi 1 x RJ – 9 Support up to 6 phone lines Cisco Discovery Protocol IEEE 802.1 p/q H.264/AVC Support: G.711a, G.711, G.729a, G.729b и G.729ab, iLBC and iSAC audio codecs

Providers in database: 6433

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VPMADT032 echo cancellation module is meant to be used with the Digium IP telephony boards; it provides echo cancellation for configurable long "tail" of up to 128 ms (1024 samples) simultaneously for all ports of the board. All IP-PBX Asterisk servers, connected to the telephone network (PSTN) have one common problem, which is "hybrid echo" - echo obtained due to the difference in the load-wire and four-wire telephone circuits. Echo appears as a distorted reflection and a detainee of the caller's voice, who is subscribed to IP-PBX Asterisk while talking to PSTN subscribers.

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