Kartel Telekomunikasyon Sistemleri
Téléphones, 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, portiers, passerelles, registre, G. 723. 1, G729, G729 A, G711 A, G711, proxy, H. 245, AES 256