Acronyms

Acronyms used in this document include:

ACL — Access Control List

ALB — Application Load Balancer

APNs — Apple Push Notification service

BGP — Border Gateway Protocol

CDR — Call Detail Records

COTS — commercial off-the-shelf software

DDoS — distributed denial-of-service

DNS — Domain Name System

DPDK — Intel Data Plane Developer Kit

DRT — DDoS Response Team

ENA — Elastic Network Adapter

EPC – Evolved Packet Core

FCM — Firebase Cloud Messaging

HA — High Availability

IRC — Internet Relay Chat

ISDN — Integrated Services Digital Network

NAT — network address translation

OPUS — online positioning user support

PBX — Private Branch Exchange

PRI — Primary Rate Interface

PSTN — Public Switched Telephone Network

RAID — Redundant Array of Independent Disks

RTC — real-time communication

RTP —Real-time Transport Protocol

SAN — Storage Area Network

SBC — session border controller

SIP —Session Initiation Protocol

SPOF — single points of failure

SRV — Service

SS7 — Signaling System n.7

STUN — Session Traversal Utilities for NAT

SYN —Synchronize

TCP — Transmission Control Protocol

TDM — time division multiplexing

TURN — Traversal Using Relays around NAT

UDP — User Datagram Protocol

URI — Uniform Resource Identifiers

VIP — virtual IP

VNF — Virtual Network Function

VoIP — Voice Over IP

VPC — Virtual Private Cloud

WebRTC — web real-time communication