We are offering enterprise ip-pbx system. Key features:-*auto-attendant *automatic disa *call budget on trunk *call back on trunk *call detail record of 12,000 calls *call forking (ip extensions) *class of service *conference dial-in *caller-id based routing *dynamic dns *external music port *hot-swap (eternity me) *hot standby (etrrnity me10sdc) *mobile trunks and extension *nat and stun support *presence and im *public address system port *relay port *qsig (isdn t1e1pri) *registrar server *security dialer *video conferencing *web based programing