Showing posts with label MGCP. Show all posts
Showing posts with label MGCP. Show all posts

Installation and Commisioning a CS1000E with Release 5.5

There are a few options when setting up a CS1000E system as to the hardware that is used. A basic configuration will include one or two call servers, one or two signaling servers, a Media Gateway Controller, a data switch, and any trunking resources and voice media gateways.

In previous releases of the CS1000 series of hardware the signaling server and the Small Systems Controller (SSC) were co-located on one card. With the release of the 5.0 software this is no longer the case – now the signaling server is on a separate CP PM card, and the SSC is no longer used, instead we use a Media Gateway Controller. The Media Gateway Controller (MGC) also contains slots for two DSP Daughterboards which provide Digital Signal Processing resources, eliminating the need for a separate card for a Media Card. A separate media card may still be installed to increase the number of resources available.

I will now discuss the physical components of the Media Gateway 1000E.

Other Signaling Protocols

Other signaling protocols include Media Gateway Control Protocol (MGCP) and Media Gateway Control (MeGaCo). These are just two examples, and I will briefly touch upon the two of these.

The Media Gateway Control Protocol is a merger of the Internet Protocol Device Control (IPDC) and the Signal Gateway Control Protocol (SGCP). It very closely resembles SIP functionality. IDPC is a suite of protocols that can, individually or together, perform connection, control, media control, and signaling transports between the circuit-switched network and the Internet. Signal Gateway Control Protocol (SGCP) is a UDP-based protocol designed to address the concept of a network that combines voice and data onto a single packet-switched IP network operating at a low level. There are two main components of a MGCP, the Call Agent and the Gateway. MGCP uses SDP to negotiate media streams and frames the media streams using RTP.

Megaco is a separate implementation of the Media Gateway Control Protocol. It is designed for controlling Media Gateways on IP networks and the PSTN. It provides voice over IP and faxing services between IP networks and PSTN. It is a joint project from both the IETF and the ITU. MegaCo is also known as H.248.