Protocol

MTP Level 2

MTP2

Lab ready Full lab

SS7 link-layer framing with flags, sequence numbers (BSN/FSN), FIB/BIB retransmission bits, and FISU/LSSU/MSU SU types. Alignment procedures and error-rate monitoring keep signaling links in service. It sits under MTP3 on traditional TDM SS7 and is emulated by SIGTRAN adaptations on IP.

Domains

telephony

Layers

Tags

ss7framingfisusignaling

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