message transfer part (SS7) (MTP)

The message transfer part(MTP) of SS7 signaling is used for reliable and fast transmission of signaling messages. It is used to exchange the message signal units(MSU) between the signaling points (SP) by means of point codes(PC). The message transfer part operates with error protection procedures and ensures error-free message transport and the correct chronological sequence of the messages. The message transfer part is subdivided into several levels, which have the designations Level 1, 2 and 3 and functionally cover the lower layers of the SS7 architecture. Message Transfer Part Level 1 (MTP1) is the architecture level of SS7 in which the physical, electrical and functional properties of the digitallink are defined. As physical interfaces, MTP Level 1 defines E1 lines with 2,048 kbit/s from 32 64-kbit/s lines, the DS transmission interface DS-0 with 64 kbit/s and DS-1 with 1,544 kbit/s, and V.35 with 64 kbit/s. Protocol stack of the SS7 protocolMTP Level 2 (MTP2) ensures the exact end-to-end transmission of messages via a Signalling Link(SLK). Flow control, message validation

Englisch:	message transfer part (SS7) - MTP
Updated at:	08.10.2011
#Words:	167
Links:	message (MSG), media transfer protocol (MTP), signalling system no 7 (SS7), transmission, signal
Translations:	DE
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