[cisco-voip] DIDs / ELINs for use in CER ?

[Dark Fiber]

Is it common practice for telco service providers to offer more
detailed location information then just the address if you request it?

I am running into a bunch of walls in getting this requested.

For instance, if I identify I have 10 locations I want to specify and
I want two DID's for each location then I would ask for 20 DID's, but
they just want to associated these 20 DID's to one location, and one
BTN and say they have no way to provide more detailed info for the
location so say like Floor 1 or Floor 2.

Not to mention the fact that some of these DID's are suppose to be for
different physical locations all together.  And then on top of that is
the issue I mentioned earlier where they only send the BTN and don't
honor our calling info.

Is there something specific you have to ask for?  Maybe its a
different service that I have to ask for then just asking for new
DID's on a PRI?

Anyway, some of you would mind sharing some info with me such as what
did you have to ask for, maybe the telco or service providers name and
what the service is called if it has a specific name, I would greatly
appreciate the info.

I didn't think this was going to be the hardest part of setting all
this up to be honest.



On 8/30/07, Scott Voll <svoll.voip at gmail.com> wrote:
> Good to know because I've dealt with the same issues.
>
> I just thought I had to add the PS-ALI / PSAP contract to get it fixed.
> Guess I'll work on that.
>
> Thanks
>
> Scott
>
>
> On 8/30/07, Ted Nugent <tednugent69 at yahoo.com> wrote:
> >
> > If the provider is sending the BTN to the PSAP they
> > need to fix that, that's NOT how it's supposed to
> > work. However you are right 90% of the installs that
> > I've have done have run into this problem but its
> > usually resolved with a call to the provider telling
> > them to honor the calling number sent to them.
> >
> > And actually it would be a problem with passing
> > location info especially if you were working in a
> > multi-building or multisite environment because your
> > ERLs and ELINS are tied together in the PSAP ALI DB.
> > If the BTN is being sent as opposed to the actual ELIN
> > then emergency personnel would always be sent to the
> > bill to address even if the ERL is in another building
> > 2 blocks over on the second floor. So you absolutely
> > need to get that fixed for CER to work correctly.
> >
> >
> > --- Dark Fiber <d4rkf1ber at gmail.com> wrote:
> >
> > > I am getting a bit confused about something
> > > regarding the use of DIDs in CER.
> > >
> > > The documents basically state that you need to get
> > > some DID's from the
> > > service provider for each ERL you plan to define,
> > > these DID's will be
> > > used as ELINs to both identify the location and for
> > > the PSAP to return
> > > the call if need be.
> > >
> > > So a 911 call is placed, and once things are setup
> > > CER will basically
> > > do or have CM do a translation of the users
> > > extension to one of these
> > > DIDs you specify so that the service provider  will
> > > know what PSAP
> > > that call needs to get routed to and so the PSAP
> > > will have a number to
> > > call back on and such.
> > >
> > > All sounds fine and dandy I guess.
> > >
> > > However, my experience (which isn't much) has led me
> > > to think that
> > > usually when dealing with  DID ranges from a service
> > > provider that on
> > > 911 calls the service provider does not usually pass
> > > the DID of the
> > > phone to the PSAP but rather the billing number
> > > which is usually the
> > > first number of the range I thought?
> > >
> > > This isn't a problem as far as passing the location,
> > > but it would be a
> > > problem for a return call from the PSAP.  CER would
> > > be looking for a
> > > call coming into one number which would be mapped to
> > > the phone which
> > > called 911, however if the billing number was passed
> > > to the PSAP thats
> > > the number that would be called back.
> > >
> > > Hopefully I am just blanking on something here and
> > > this is not the case.
> > >
> > > Can anyone enlighten me on what I am missing here?
> > > Thanks!
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> > >
> >
> >
> >
> >
> >
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