Kartel Telekomunikasyon Sistemleri
Phones, IP-PBX, VoIP, BRA, CCS7, Central Office, Caller ID,CIS,CLIP,Converter,DSS1,E&M,E1,ISDN,ISUP,LCR,MFCR2,MFR1,PRA,QSIG,R1. 5,R2,ZSL/SL,SLM,SS7,SSP,STP,V5. 2, SS No7, H323, gatekeepers, gateways, register, G. 723. 1, G729, G729 A, G711 A, G711, proxy, H. 245, AES 256