Many firms today deliver a T1 that is sending SIP trunks, and convert that to PRI with an Adtran or some other IAD device. You receive PRI. The backbone is based on SIP. Airespring is a good example of that. Locally, we have Integra.
Yes, in the old days, as Picher described, the Local Exchange Carriers had Analog trunks. Each trunk had its own distinct number. Those trunks were grouped together into Hunt Lines, which essentially chained them together into one logical number. You call one number, first call reaches trunk one, second call reaches trunk two, etc. Those days are well behind us now. You are dealing with lines with DID numbers today with ITSPs. If you have service with 10 concurrent call sessions, you can get up to 10 calls. That might be 6 calls on 555-1111 and 4 calls on 555-2222, for a total of 10 calls. On the 11th Concurrent call, they give a busy. I don't understand "the twist". You describe multiple Analog lines going into a PBX. Are you trying to use sipXecs to provide sip trunks to that PBX? I don't understand what the example has to do with the discussion. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Saturday, November 19, 2011 1:44 PM To: sipx-users Subject: Re: [sipx-users] SIP Hunt Group On Sat, 19 Nov 2011 16:07:45 -0500, Michael Picher wrote: > Well, voip.ms will support 20 calls inbound on the same DID... > why would you need a hunt group? > usually you only need to do this if you have multiple analog lines. As Todd mentions, I might be using an old term with a newer technology but in searching around, we were not able to confirm this. I'm not sure if I am using the right term but years back, when I needed to have multiple calls to the same phone number, I would use a hunt group. The telco would program my main line to ring on the first available line, then the next free line, one after another. Also, here's the twist, in one case, it might be multiple analog lines because this is going into an older PBX which only has multiple analog line inputs. In the other, I need to find a device that will take a SIP trunk and convert that into a PRI port because the PBX only has a PRI port. Mike > On Sat, Nov 19, 2011 at 2:52 PM, [email protected] <[email protected]> > wrote: > >> Does anyone know if any SIP trunk providers offer hunt groups. >> > I found a post from a couple of months back where someone was asking > about this but it didn't seem to lead to any answer. > Sipx cannot do this on it's own as far as I understand this, it needs > to be programmed at the providers end. > > Example, 6 line hunt group in a small office. > A call comes in on the main number, the receptionist transfers the > call to someone. > The main number needs to be freed up again in order for another > incoming call, up to say 6 simultaneous callers. > > This is a typical situation where an office has a hunt group or > sometimes called 'rotary' service but in this case, I need to use a > SIP provider such as voip.ms or flowroute. Neither of which appear to offer these services. > > >> Thanks for any input you can provide. >> > Mike > > _______________________________________________ > sipx-users mailing list > [email protected] > List Archive: http://list.sipfoundry.org/archive/sipx-users/ _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/ _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users/
