Smb IP-pbx System

We are offering ip-pbx system. 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 *caller-id based routing *door-phone port (4-wire) *dynamic dns *externsl music port *mobile trunks and extension *nat and stun support *presence and im *public address system port *registrar server *relay port *qsig (isdn t1e1pri) *return call to original caller (rcoc) *security dialer *sensor port *universal routing with least cost *video conferencing *web based programing