Cisco 7911G Unified IP Phone

Cisco Unified 7911G IP phone is meant for office workers, retail shops, workshops, and any other workers generating small to medium phone call traffic.

This IP phone is a base model improved with few modifications and has following functional characteristics: Support for power supply over Ethernet IEEE802.3af and Cisco power supply standard Additional memory volume to support advanced features and applications. 4 soft keys provide users of CP-7911G with access to various features and functionality, while the graphic display combines intuitive controls, information on service calls and XML. Complete line protection Cisco Unified CallManager User interface, similar to other IP phone models of Cisco Unified family

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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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Phone Kall

Phonekall is a leading telecom service provider that deals with the VoIP services. It offers the clients with advanced technology solutions for making calls globally with enhanced functionality and support.