GlobalPBX - Enterperise Level IP PBX GlobalPBX is more than just a PBX. It's a system that integrates seamlessly in your IP Network. It can bridge said network with your analog, PSTN lines. It can reach you anywhere: At the office, at home, on your cellphone... if it can't reach you, it will leave a voicemail message.. not only on your PBX but it will send a copy to your email. Your employees can connect to GlobalPBX from their home, another city, even another country and still be reachable on the same extension!. It has an integrated IVR system so that you can create your own auto-attendant. You can have a New York phone number and have it ring in Phoenix. And that's just the tip of the iceberg. Listed below are the features GlobalPBX can provide you:               Call Features MP3 Music on Hold MP3 Music on Transfer Volume Control Call Waiting Caller ID Caller ID Blocking Caller ID on Call Waiting Call Forward on Busy Call Forward on No Answer Call Forward Variable Call Transfer Call Parking Call Retrieval Remote Call Pickup Do Not Disturb Support VoIP Protocols Inter-Asterisk Exchange (IAX) H.323 Session Initiation Protocol (SIP) Media Gateway Control Protocol (MGCP) Cisco Skinny Call Control Protocol (SCCP) Scalability Capacities up to more than 10,000 simultaneous calls Several servers can share a single dial plan as one virtual PBX using a redundant DB backend Uses Commodity Ethernet Hardware Traditional Telephony Interoperability Robbed Bit Signaling Types FXS and FXO Loopstart Groundstart Kewlstart E&M E&M Wink Feature Group D PRI Protocols 4ESS Lucent 5E DMS100 National ISDN2 EuroISDN BRI (ISDN4Linux)   Telephony Services Voicemail System Password Protected Separate Away and Unavailable Messages Default or Custom Messages Multiple Mail Folders Web Interface for Voicemail Checking E-mail notification of Voicemail Voicemail Forwarding Visual Message Waiting Indicator Message Waiting Stutter Dialtone Auto Attendant Interactive Voice Response Overhead Paging Flexible Extension Logic Multiple Line Extensions Multi-Layered Access Control Direct Inward System Access Directory Listing Conference Bridging Unlimited Conference Rooms Access Control Call Queuing ADSI Menu System Support for Advanced Telephony Features PBX Driven Visual Menu Systems Visual Notification of Voicemail Call Detail Records Local Call Agents Remote Call Agents Protocol Bridging Automated Calling Provides seamless integration of technologies Offers a unified set of services to users regardless of connection type Allows interoperability of VoIP systems Voice over IP Allows for Integration of Physically Separate Installations Uses commonly deployed data connections Allows a unified dialplan across multiple offices Voice over IP Interoperability GlobalPBX provides transparent bridging between Voice over IP protocols and traditional telephony equipment. In addition, it can transfer calls from one system to another via the Inter-Asterisk Exchange protocol. Codec Support GSM G.729 (available through purchase of commercial license(s)) G.723.1 (pass through) Linear Mu-Law A-Law ADPCM ILBC LPC-10 MP3 Playback(decode only)