AP-FXS4H module is NGN (Next Generation Networks) VoIP Switching Gateway Solution offering both VoIP Gateway function and PSTN service features by installed at VoiceFinder AP3100N VoIP Gateway. It offers VoIP telephony service to number of users by installed at central offices and MDF of apartment complexes. So even for the users without high-speed Internet service can subscribe VoIP telephony service.

Adopting the merits of PSTN Switch and VoIP Gateway
VoiceFinder AP3100N VoIP Switching Gateway with AP-FXS4H is a next generation IP telephony system offering the merits of existing PSTN switch based on the merits of VoIP telephony. It offers the centralized management feature of VoIP gateway and it effectively deals with complex numbering plan of existing PSTN Switch. It overcomes the distance barrels between the subscriber and the VoIP gateway. So the service providers can easily introduce VoIP telephone service without changing the existing infrastructure. Also, it supports caller ID, various ringing, and surge protection of over 4KV and noise immunity of ADSL/ VDSL.

Deploy "Next generation VoIP telephony solution" on current subscriber environment
Until now, introducing IP network such as broadband Internet should be ahead of introducing VoIP telephone service. So at ordinary houses or small enterprises without network managers, adopting VoIP telephone service is not simple, especially in case of system malfunction. AP3100N is a perfect solution overcoming these shortcomings. It is installed at the telecommunication closet or central offices, so the users can subscribe VoIP service without subscribing broadband Internet service such as ADSL/VDSL, cable modem, etc. Also, it supports number of individual users, so the service providers can reduce the maintenance expenses which significantly reducing the service charge.

Distributed IP Telephony network solution
VoiceFinder AP3100N VoIP Switching Gateway with AP-FXS4H can easily form telephony service network by connecting number of Switching Gateways. So it is a perfect solution to establish distributed IP telephony network.

Supports long reachable distance between PSTN Switch level phones and VoIP switching gateway Powerful surge protection (over 4 KV) in case of central exchange and MDF installation Noise immunity on high-speed network of ADSL/ VDSL with built-in LPF function Supports existing PSTN numbering plan to support various customer service needs Centralized management mode, significantly reducing maintenance expenses Supports caller ID and ringing for various analog phones Reduced operation expenses with simplified, distributed IP telephone switching network

VoIP Telephony service configuration change on subscriber side           Existing VoIP network on subscriber side                   AP3100N based VoIP network on subscriber side VoIP Comparison chart of ordinary telephone - VoIP Telephone- NGN VoIP Telephone 　 ITEM PSTN telephone VoIP Telephone NGN VoIP Telephone Subscriber line Voice service only network Requires high-speed Internet and VoIP Gateway Utilizing existing telephone line, no environment change Telephone charge Relatively high Low Low User convenience High Mid High Easy management Low Mid High Possibility of technical advancement Low Mid High Additional service Various Focus on voice service Various Supports various telephones Support Limited Same as PSTN telephone service Installation location of Switch Central offices Offices or houses Central office or apartment MDF Supports complex numbering Support Limited Support Subscriber distance Approx. 4Km Hundreds of meters Almost same as PSTN telephone service Additional service Focused on voice service Focused on reasonable telephone charge Various additional service such as free in-complex calls, designated telephone numbers