: SBC, TDM, SS7, Voice Routing NGN: VoIP, Video, SIP trunking,
IMS NGN Protocols: SIP, SS7, H.323, H.248, MGCP Security... in NGNs: IPSec, VPNs, NAT/Firewalls Ethernet, IP, IP routing MPLS Access
Networks: LLU, Cable, ADSL, 4/5G Hosted/cloud... -
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