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<p>I am trying to get a handle on E.164 dialing and + based dialing. I understand the different design models such as Uniform ON-Net Dialing and Variable-Length On-Net Dialing with Flat Addressing. My trouble comes into understanding how I can globalize every number in the system to +E.164 / E.164 numbering plan. I am concerned with smaller sites in a larger deployment that have non-DID numbers.</p>
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<p>So let’s say I have a site1 with 40 IP phones. Site1 has 6 POTS lines setup in a hunt group with the main number being 3195554000. Each IP phone is given an extension in the 1XXX range, example 1001, 1002, 1003 and so on. How should I globalize this out to other internal clients and to the PSTN?</p>
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<p>Now lets take site2. This site has 90 IP phones and a block of numbers from the PSTN of 31955561XX. Site2 has several internal only DNs such as bells, paging numbers, intercom numbers and lobby phones that the customer does not want to use DID numbers on. How would I accomplish this and still globalize the numbers correct?</p>
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