Where is mobile switching center located?

The MSC is stationed between the base station and the Public Switched Telephone Network (PTSN). All mobile communications are routed from the base station through the MSC. The MSC is responsible for handling voice calls and SMS including other services like FAX.

What is the relationship between a base station and a mobile switching Centre?

The MSC is structured so that base stations connect to it, while it connects to the PSTN. Because cellphones connect to these base stations, all forms of communication, whether between two cell phones or between a cell phone and a landline telephone, travel through the MSC.

What is MSC in cellular network?

Description. The mobile switching center (MSC) is the primary service delivery node for GSM/CDMA, responsible for routing voice calls and SMS as well as other services (such as conference calls, FAX, and circuit-switched data).

What is a telecommunications switching station?

A telephone exchange, telephone switch, or central office is a telecommunications system used in the public switched telephone network (PSTN) or in large enterprises. It interconnects telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers.

How is location updated by MSC using HLR VLR?

When an MS registers with the new network, it sends its TMSI and LAI. The network then queries the old VLR for data and uses the data to authenticate the MS. The new VLR then communicates with the HLR to update the location of the MS. The HLR sends a registration cancellation message to the old VLR.

How BSC and MSC are connected?

The BSC is the connection between the mobile and the MSC. The BSC also translates the 13 Kbps voice channel used over the radio link to the standard 64 Kbps channel used by the Public Switched Telephone Network (PSDN) or ISDN. It assigns and releases frequencies and time slots for the MS.

What is BSC MSC BTS in telecom?

The BTS (Base Transceiver Station) is controlling the radio transmission and the interface to the mobile phones. Several BTS connect to BSC stations (Base Station Controller), while the BSC are connected to the MSC (Mobile Switching Center).

Who trigger location update procedure?

The HLR initiates the procedure when it receives an ‘update location’ message from a VLR other than the one in which the MS was located at the time when its location information was last updated in the HLR database.

How is the current location of a subscriber determined for a mobile terminated call and how is the call forwarded through the network?

Mobile-terminated call the GMSC can request information about the subscriber’s core network and current location by interrogating the HLR (Home Location Register). the MSRN is sent back from the HLR to the GMSC. the GMSC forward the call to the MSC using the assigned MSRN.