Piaf Pbx

T48G Datasheet - Yealink
The SIP-T48G is Yealink’s most recent innovative IP Phone for a fast-changing world. IP-PBX Features > Busy Lamp Field (BLF) > Bridged Line Apperance(BLA) > Anonymous call, anonymous call rejection > Remote office, hot-desking ... Access Doc

Applying-voip-system-for-monitor-the-call-center.googlecode.com