ABREVIATURAS

FXS - Foreign eXchange Subscriber

FXO - Foreign eXchange Office

GPL - GNU General Public License

IP - Internet Protocol

ITU - International Telecommunication Union

LCR - Least Cost Routing

NAT - Network Address Translation

PBX - Private Business eXchange (PABX)

PSTN - Public Switched Telephone Network

QoS - Quality of Servicy

RTP - Real Time Protocol

SIP - Session Initiation Protocol

VoIP - Voice over Internet Protocol................................................................................ 37

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