2009/9/29 Alec Davis <siva...@paradise.net.nz> > When I say no reliable internet, some days it's good, others it's not, so > to > try to push a call over an IAX trunk is going to fail. > > For the choice of providers, when it comes to a business with branches > around the country (NZ is small enough) we'd choose one provider. > > Subaddress is not limited to PRI, it's also available on BRI lines. > > We have 2 PRI connected sites and 1 BRI ISDN site, all 3 with asterisk, and > non overlapping extension dial plans. > SITE A: 8500-8599 > SITE B: 8800-8899 > SITE C: 8300-8399 > > The flow goes something like this: > Site A: > 8501 dials 8801 > dialplan sets CallingSubaddr to 8501 > dialplan calls SITE B's main number (perhaps 09 1234567) with > CalledSubaddr set to 8801. > > Site B: > the main number (09 1234567) is processed by asterisk > dialplan sees that CallingSubaddr is set to 8501, so sets CallerId > to 8501 > dialplan sees that CalledSubaddr was set to 8801 so dials 8801. > > Regarding POTS it will not work, but some ISDN PABX's have the dialling > concept of dialling a '*' as the separator between Number and SubAddress > and > '#' as end of dialling. >
Looking at thread back, I wondered if this Subaddress feature : A- either must be specifically allowed and actived by your Telco B- or is an ISDN requirement and you don't need to order anything to your provider. In case A, how does the activation and recurrent fees compare to DID costs ? Cheers > > Alec Davis >
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