The cost of the boards vs the cost of an external Ethernet gateway are negligible, however, with the gateways you get hardware codecs and if the server crashes you can have the hardware gateways immediate send calls over to the secondary server. As for USB, I don’t know of anything USB that really works for FXO and FXS. Companies like Adtran TA900 series and Sangoma Vega series seem to be very reliable, the later can be a little bit of a pain to configure From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Bob Hartwig Sent: Friday, April 15, 2016 10:20 AM To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org> Subject: Re: [Freeswitch-users] FXO and FXS Devices Hey Ken, why the recommendation to use an external gateway instead of FreeTDM / Sangoma / Dahdi-compatible boards? On Fri, Apr 15, 2016 at 9:50 AM, Ken Rice <krice@freeswitch.org <mailto:krice@freeswitch.org> > wrote: FreeSWITCH can use Sangoma FXO/FXS PCI(e) hardware but I recommend using an external gateway, how many ports are you going to need? K -----Original Message----- From: freeswitch-users-bounces@lists.freeswitch.org <mailto:freeswitch-users-bounces@lists.freeswitch.org> [mailto:freeswitch-users-bounces@lists.freeswitch.org <mailto:freeswitch-users-bounces@lists.freeswitch.org> ] On Behalf Of Shawn Wheeler Sent: Friday, April 15, 2016 9:46 AM To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org <mailto:freeswitch-users@lists.freeswitch.org> > Subject: [Freeswitch-users] FXO and FXS Devices What types of FXO and FXS devices does FreeSWITCH use? Thank you Shawn _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org <mailto:consulting@freeswitch.org> http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org <mailto:FreeSWITCH-users@lists.freeswitch.org> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org <mailto:consulting@freeswitch.org> http://www.freeswitchsolutions.com Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org <mailto:FreeSWITCH-users@lists.freeswitch.org> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org