Th CML pplctn Prt (CP) s sgnllng prtcl sd n th ntllgnt Ntwrk (N) rchtctr. CP s Rmt prtns Srvc lmnt (RS) sr prtcl, nd s sch s lyrd n tp f th Trnsctn Cpblts pplctn Prt (TCP) f th SS#7 prtcl st. CP s bsd n sbst f th TS Cr nd llws fr th mplmnttn f crrr-grd, vl ddd srvcs sch s nfd mssgng, prpd, frd cntrl nd Frphn n bth th GSM vc nd GPRS dt ntwrks. CML s mns f ddng ntllgnt pplctns t mbl (rthr thn fxd) ntwrks. t blds pn stblshd prctcs n th fxd ln tlphny bsnss tht r gnrlly clssd ndr th hdng f (ntllgnt Ntwrk pplctn Prt) r NP CS-2 prtcl.