[VoiceOps] Unique DIDs vs. Custom extensions

Rafael Possamai rafaelpossa at gmail.com
Tue Sep 15 12:57:08 EDT 2015

Thank you, Mark. Would you say I could get all of this accomplished within
one of these platforms, without the need to setup another system such as

On Tue, Sep 15, 2015 at 11:19 AM, Mark R Lindsey <lindsey at e-c-group.com>

> You don't need a call routing platform: you need call routing data.
> As much fun as it is to build new systems, that might not be your need.
> On Sep 15, 2015, at 11:58 , Rafael Possamai <rafaelpossa at gmail.com> wrote:
> I was tasked to design a system that would give each end user a unique DID
> from a pool of about 1,000 DIDs total. Every inbound call to a DID would
> then be forward to the end-users actual phone number (office, mobile,
> etc..).
> WIth that in mind, to me it looks like a big waste of DIDs, and I could
> use custom extensions instead, with a single DID for everyone. Each
> end-user is assigned a 5 digit code (an extension pretty much) and gets
> re-routed accordingly. I believe using Asterisk and/or FreePBX I could
> still collected all the data that is needed.
> The two-stage process will give you different results from having DIDs.
> Calling into an IVR/Auto Attendant and entering an extension is going to
> be considered old school for a lot of folks. In the US, almost everybody
> has a DID listed on their business card or advertisement. Otherwise you're
> signaling that you'd like to keep the caller at a distance; "I'm not going
> to let you ring my phone directly; I'm going to send you through a gauntlet
> of call transfers".
> PSTN DIDs aren't a scarce resource unless you require them all to have 212
> area codes (for example of a big city).
> Estimated inbound minutes is 500,000 a month, so that requires another
> 500,000 outbound minutes because each call is forwarded. One million
> minutes a month does turn out to be expensive, close to U$8,000/month from
> some quotes that I have gotten.
> Rather than building it yourself, you could use somebody else's platform
> -- if they'll give you access to the billing data and give you the
> call-forwarding options you need.
> -- PhonePower offers business-oriented service with unlimited minutes
> -- Phonebooth <http://Phonebooth.com> (a Bandwidth.com company) has
> unlimited minutes
> I'd recommend you contact these guys directly and explain your need. They
> all have technical people on this list.
>     --- mark at ecg.co
>         +1-229-316-0013
>         http://ecg.co/lindsey
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