> > >Scott Lawrence wrote: >> >> So there are two phones on the system 201 and 202, but 202 >> also has a PSTN DID 555-1202, and 201 calls that DID number >> so that the call goes out via the ITSP and comes back in? >... >> The real answer to such a thing is to have a rule that prevents the >call from looping out in the first place. > >On our sipXecs trial system we minimize the chance of such scenarios by >using user aliases that are equal to the person's DIDs with dialing >prefix. This ensures that the calls made using your colleague's DID are >never sent to PSTN and are terminated locally. >In the example above if the PSTN prefix is 9 then: 202 has alias 5551202 >for the purposes of receiving incoming calls and it also has alias >95551202 for the purposes of resolving outgoing calls locally. > >It does not solve the problem entirely since one can still end up with a >call between 201 and 202 via ITSP due to call forwarding or far end >transfer. > >Cheers, >Mark.
How can this be made intuitive to an ordinary user / admin? It seems to me that even if there is a fix using smart aliases it does not solve a users problem unless is is made easy to use and intuitive to configure. How can this be accomplished? --martin
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