Local Area Network Media-Access Methods Media contention occurs when two or more network devices have data to send at the same time. Because multiple devices cannot talk on the network simultaneously, some type of method must be used to allow one device access to the network media at a time. This is done in two […]
Error Detection and Correction 1 Introduction Environmental interference and physical defects in the communication medium can cause random bit errors during data transmission. Error coding is a method of detecting and correcting these errors to ensure information is transferred intact from its source to its destination. Error coding is used for fault-tolerant computing in computer […]
Flow Control Basics Flow control is a function that prevents network congestion by ensuring that transmitting devices do not overwhelm receiving devices with data. A high-speed computer, for example, may generate traffic faster than the network can transfer it, or faster than the destination device can receive and process it. The three commonly used methods […]
MTP2 and MTP3: Message Transfer Part level 2 and level 3 Protocol Description Message Transfer Part (MTP), a protocol in the SS7/C7 protocol suite, transfers signal messages and performs associated functions, such as error control and signaling link security. Message Transfer Part (MTP) also provides reliable routing within a network. MTP has two parts, MTP […]
MAP: Mobile Application Part Protocol Description The Mobile Application Part (MAP), one of the protocols in the SS7 suite, allows for the implementation of the mobile network (GSM) signaling infrastructure. The premise behind MAP is to connect the distributed switching elements, called mobile switching centers (MSCs) with a master database called the Home Location Register […]
ISUP: ISDN User Part Protocol Description The ISUP – ISDN User Part, a key protocol in the SS7 / C7 signaling system, defines the protocol and procedures used to set-up, manage, and release trunk circuits that carry voice and data calls over the public switched telephone network (PSTN) between different switches. ISUP is used for […]
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