E1/T1
A European format for digital transmission. E1 supports signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling), versus the T1, which carries signals at 1.544 Mbps (24 channels at 64Kbps).
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.
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