xvi List of Abbreviation and Acronyms
IoT
Internet of things
I/O
Input/Output
IP
Internet protocol
ISP
Internet service provider
IT
Information technology
L1
Layer 1
L1VPN
Layer 1 VPN
L2TP
Layer Two tunneling protocol
L2VPN
Layer 2 VPN
L3VPN
Layer 3 VPN
LAN
Local area network
LTE
Long term evolution
LTE-A
LTE-Advanced
M2M
Machine-to-Machine
MAC
Media access control
MANO
Management and network orchestration
MIMO
Multiple input multiple output
MME
Mobility management entity
MSC
Mobile services switching centre
MWC
Mobile World Congress
NAT
Network address translation
NEP
Network equipment provider
NF
Network functions
NFV
Network functions virtualization
NFVI
Network functions virtualization infrastructure
NIC
Network interface card
NV
Network virtualization
O&M
Operations and maintenance
OPEX
Operational Expenditure
OSPF
Open shortest path first
OSS
Operational support system
OTN
Optical transmission network
P2P
Peer-to-Peer
PaaS
Platform-as-a-Service
PDCP
Packet data convergence protocol
PE
Provider edge
PGW
Packet data networks gateway
PON
Passive optical network
POP
point of presence
PSTN
Public switched telephone network