Eric Root is spot on as always. đȘđ» I believe your carrier is sending it that way and there is nothing they are likely to do about it for they are most likely conforming to E.164 global dialing standards as they see fit to. My badinov. đ
This â+1â stuff we see on our cell phones these days is all about E.164 global dialing standards. The + represents the international exit code for the country youâre in and the 1 is the international country code for the U.S. and Canada. Both are obviously irrelevant for calls originating and terminating in one and the same country. Most if not all carriers, when, as the end carrier, relaying a call to their subscribers, will drop the â+1â or â1â and relay just the 10-digit # for the CLID because they know whatâs relevant for their subscribers to be able to return the call. When a call comes into a carrier as the end carrier with +n when n is a different country code in the CLID, itâs entirely relevant and they donât drop it. When it's non-conformant e.g. + without a country code, different carriers as the end carrier handle it differently. Most intuitively, some carriers simply drop the entire string and send an ASCII character that represents âunknown callerâ or âunavailableâ et c. Other carriers carry on with just the 10-digit # anyway and if theyâre wrong itâs the originatorâs fault. Other carriers relay it as is and, again, if thatâs wrong itâs the originatorâs fault.
Not too uncommon of a scenario: You have an enterprise with a PBX and a VoIP service provider. Enterprise hears that some customers receive the CLID with an erroneous + prefix whereas others receive it as âunknownâ or âunavailableâ et c. while others receive it straight up as the 10-digit #. VoIP provider has no idea which carrier along the way is inserting the international exit code they just know itâs not any of the end carriers and they themselves (the VoIP provider or, in certain circumstances, actually the VoIP subscriber) can eliminate the problem by originating with the international country code (1) in the CLID. Then problem gone. Everybody receives the straight up 10-digit # CLID or, at least, if there's a prefix, it'll be the E.164-correct +1. This goes to show you how disorganized some of these fly-by-night VoIP service providers are particularly as relates to how they tie in to the PSTN.
Go on, then. I salute you for raising this flag up the pole.