Here is one suggestion: - single OpenSIPS & Asterisk at central office - use Asterisk as gateway to PSTN (for all offices) - connect remote office PBXs to central office using using multi-port FXS gateways - 110ms is no problem - single system admin point, single cpu, 200 or more concurrent calls - no admin, low cost at remote offices
Mark On Sun, Jan 16, 2011 at 8:21 AM, Sean Kelly <[email protected]> wrote: > Hello all, > I am new to OpenSIPS but have a problem which I believe OpenSIPS can solve. > Due to the power of OpenSIPS there are many ways to solve any particular > issue it seems. I wondered if the expertise of the group would assist in > pointing me in a relevant direction with regards to where to focus my > education into a solution using OpenSIPS. > We currently have 10 very old pbx's, 1 at each office and these connect > directly to the telco. As such, the calls between offices are charged > long-distance. All offices have more than adequate Internet connectivity. > What I would like to do is put * servers in each region where office phones > will register with the central * and have those trunk to OpenSIPS which will > direct internal calls between servers (free national calls), and also keep > track of calls out to the PSTN to match/compare with telco billing. OpenSIPS > will trunk to a CLEC providing inbound/outbound service. Some offices are >>=40ms from head office, some are as high as 110ms. > Goals: Single domain, regionally dispersed, free internal calls nationally, > high-availability (region & national), single or load-balanced in/out from > CLEC and bill tracking. > > Questions: > ---------------- > 1. The CLEC charges trunk setup fees, so is it feasible to have all in/out > PSTN calls going through OpenSIPS nationally so as to only have 1 or 2 > trunks with provider? (as opposed to 10) > 2. Should I have 2 OpenSIPS in this scenario with each regional * > trunking/fail-over to each or have 2 OpenSIPS+Asterisk setup regionally with > each region trunking to CLEC? .. or both? > 3. Which modules / combination of modules would you recommend I focus on to > achieve the above goals? > 4. CID is important as well, internal & pstn. Does OpenSIPS simply > pass-through CID or do I need to look into scripting a solution for this to > work like a traditional telco? (do not see CID passing in lab). > 5. For inbound, how would I direct calls to the appropriate regional * > server? > 6. How would you break this down to ease the start of the complete solution? > ie: focus on national inbound/outbound or regional first? > Presently I have graduated from the OpenSIPS_Live_DVD_VM to having OpenSIPS > installed/setup & working with phones in my lab on Debian 5. Have been > following the OpenSIPS telephony book and also watching videos and reading > articles on opensips.org which have all been excellent resources so far in > getting me through the basics. > > Any suggestions on which modules or part of the solution I should focus on > next? General comments / suggestions? > > > Thanks, > Skyler > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.opensips.org/cgi-bin/mailman/listinfo/users > > _______________________________________________ Users mailing list [email protected] http://lists.opensips.org/cgi-bin/mailman/listinfo/users
