Cisco 6901 Unified IP Phone

Cisco 6901 IP phone model is used for creating inexpensive communication networks in places like elevators, hotel or restaurant corridors etc (UC Phone 6901, Standard handset).

Main feature of Cisco 6901 IP phone is that it can accept up to two simultaneous calls in a call waiting mode. Fixed keys ensure a quick access to the hold, redial and call waiting features. Also one of the main characteristics is the low power consumption and possibility of mounting it on the wall.

Technical Characteristics: Specially Assigned keys for holding, transferring and conference calls 1 x RJ-45 10/100 Ethernet port IEEE 802.3af PoE Maximum consumed power is 2,77 V DC Power supply with the help of power supply block CP-PWR-CUBE-3 or CP-PWR-INJ power injector Codec support: G.711a, G.711, G.729a, G.729b и G.729ab

Providers in database: 6433

SDP Protocols Are Used To Transmit Media Session Information

In 1998, the Internet Engineering Task Force (IETF) published the specification for a Session Description Protocol or SDP as a format that describes parameters for streaming media. The original IETF Proposed Standard was updated in 2006 as RFC 4566. Although the SDP was created as a feature of Session Announcement Protocol (SAP), it can be used with Real-time Transport Protocol, Real-time Streaming Protocol (RTSP), and Session Initiation Protocol, as well as a standalone protocol. Parameter negotiation, session announcement and session invitation are included in the descriptive sessions from the SDP protocol. Rather than transmit data like other types of protocols, an SDP negotiates between media type endpoints, format and properties involved. A session begins when a connection is established, and the session is terminated only after every endpoint is no longer participating.

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Voiptechnologies

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