private branch exchange

MOSA SIP IP-PBX meets PBX communications requirements of enterprises and is able to connect a variety of telecommunication interfaces such as PSTN phone lines, SIP ITSP, fax machines, telephone sets, voice mail, SIP IP-phone, SIP Soft-phone, Wifi-phone, as well as SIP CPE devices. MOSA SIP IP-PBX uses module-like design to connect to all kinds of interfaces. As shown in the drawing above, the Analog Trunk Gateways are used for interfacing PSTN and the Analog Line Gateways are used for interfacing telephone sets, fax, and voice mail. Every category of gateway is equipped with an Ethernet connector to inter-connect through IP network in order to form a complete SIP IP-PBX system. Moreover, SIP IP-PBX offers a variety of Application Service Devices (ASD) to enrich system functions. The ASD devices provide the following functions ? Virtual Numbering (Redirect Server: FONEMOSA 4491) ? Call Detail Record receiver(CDR Receiver: FONEMOSA 4492) ? Automatic Call Distributions (ACD Server: FONEMOSA 4493) ? Call Parking (Parking Server: FONEMOSA 4495) ? Meet Me Conference (Conference Bridge: FONEMOSA 4484) ? PBX Conference (PBX Conference Bridge: FONEMOSA 4496) ? Call Broadcasting (Broadcast Server: FONEMOSA 4483) ? Call Route Management(Route Manage: FONEMOSA 4498) ? Network Bridge(Network Bridge: FONEMOSA 4499) ? (Transfer Server: FONWMOSA 4481) The following table shows the functions of each category of devices as well as the model numbers belonging to that category: Analog Line/Trunk Gateways (Enter) Product Name Description Download MOSA 4616 CE MOSA 4600 FONEMOSA 4400 Plus FONEMOSA 4400 Digital Trunk Gateways (Enter) Product Name Description Download MOSA 4630/60/120 SIP Line Servers (Enter) Product Name Description Download MOSA 4600B SIP Line SIP Trunk Gateways (Enter) Product Name Description Download MOSA 4600C SIP Trunk Application Service Devices (Enter) Product Name Description Download FONEMOSA 4491 FONEMOSA 4492 FONEMOSA 4493 FONEMOSA 4495 FONEMOSA 4496 FONEMOSA 4499 FONEMOSA 4483 FONEMOSA 4484 Multi-national enterprises with branch offices located around the world are the ideal candidates for MOSA SIP IP-PBX. Branch office staff can select either multi-functional SIP IP-phones or traditional phone set as the PBX extensions. All the SIP devices can be connected with IP networks and form a unified IP-PBX system. Users are able to dial phone calls to each other as an intercom call within an integrated PBX. For example even the staff located in different country, can dial each other simply by dialing their extension numbers.The following drawing shows a typical application of a multi-national enterprise with headquarter located in US using MOSA 4616/4416 to connect with traditional PBX. A MOSA 4600C SIP Trunk connects to Vonage ITSP allowing employees worldwide to access Vonage. A full set of ASD devices are also provided for the application like Virtual number, conference call and call broadcasting to all the employees around the world. Connecting a MOSA 4600B SIP Line in the headquarters allows traveling staff such as sales to dial directly from their soft-phone located in hotels. For example, an office in ShangHai having a staff of 20 installs one 4616/4616 plus one 4608/4408 for simple PBX function. One 4600B SIP Line is provided so that traveling staff can use the Internet to call office employees free.An office in Taipei office with three staff can be served with one MOSA 4608/4408 with one MP 3208 module so that it is able to support 4 FXO ports and 4 FXS ports. Two of the FXO connect to PSTN line while the other two FXO are reserved for future expansion. One of the FXS ports can be connected to a fax machine.An office in Paris with ten staff, newly established, with the employees equipped with multi-functional SIP IP phones can be served. Under this configuration, one MOSA 4600B SIP Server takes care of all SIP extensions. A MOSA 4604C equipped with 4 FXO ports connecting to PSTN lines provides a good solution for SIP extension to access the PSTN line.