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Appendix D
Acronyms
ACD automatic call distributor
CAS channel associated signalling
CoS class of service
DHCP dynamic host configuration protocol
DND do not disturb
DNS domain name service
DTMF dual tone multi-frequency
FQDN fully qualified domain name
GMT Greenwich Mean Time
ICMP Internet control message protocol
IEEE Institute of Electrical and Electronic Engineers
IP Internet protocol
LAN local area network
MAC media access control
MDI media dependent interface
NTP network time protocol
PBX private branch exchange
PCM pulse code modulation
PHB per hop behavior
PIN personal information number
PSTN public switched telephone network
QoS quality of service
RTCP real time transport control protocol
RTP real time transport protocol
SIP session initiation protocol
SNTP simple network time protocol
TCP transmission control protocol
TFTP thin file transfer protocol
UDP user datagram protocol
URI uniform resource identifier
URL universal reference locator
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