[asterisk-users] SIP Trunking Mantra (Origination)

[Mitul Limbani]

Interesting.
You might want to consider paying some expert for consulting ?

Mitul
On Jun 22, 2013 7:21 PM, "Nick Khamis" <symack at gmail.com> wrote:

> Hello Everyone,
>
> We are currently having talks with various service providers, and
> trying to determine what the best way is to interconnect in order to
> have access to the PSTN network. As you know there are two ways of
> doing this:
>
> Traditional PRI: Have trunks grouped into a transport layer such as
> OC3/12. With DIDs attached to the group. As you many know, this
> approach would also require a POP near the CO of the exchange we want
> to service etc.. We could also have the service provider backhaul some
> of the NXX in areas we do not have a POP, to a location near by.
>
> SIP Trunking: SIP traffic coming through the end of transport layer
> such as OC3 or ethernet connection directly connected to the service
> provider, with DID that can come from anywhere. No need for a POP in
> Chicago, for example, when we are located in Kansas.
>
> The benefits of one over the other are known, and not the topic of
> this message. What we are trying to determine are:
>
> When talking market price, a "virtual PRI/SIP Trunk" interconnect
> costs about 500-550 per 24 channel virtual pri. This compared to a
> true "ISDN/PRI" which can costs between "200-500" dollars depending
> who you talk to. We also have to take into consideration the hardware
> needed for either setup i.e.:
>
> * Option 1: SIP Proxy
> * Option 2: media gatweays, multiplexers, media server....
>
> Even though it was natural to talk about "pricing", this is still not
> what we are interested in knowing. What we are interested in finding
> out is:
>
> * How are service providers that offer "virtual pris" interconnected
> with their suppliers? I would imagine that some (non-CLECS), are
> renting a connection from the LECs, and grouping PRI/ISDN trunks
> (option 2). And others (CLECS), have a A-Link/ISUP trunk interconnect
> to the CO.
>   - Which brings up a second question. How does a PRI trunk group
> differ from an ISUP
>     trunk. I don't know much about and ISUP trunks and would *really*
> appreciate having
>    someone educate us on (i) the concept, (ii) what type of equipment
> would be needed,
>    (iii) how it differs from ISDN trunk groups. (iv) is it only
> available for LECS
>
> I do have more questions, however for the sake of brevity will stop
> right here. And before anyone asks the "it depends what you want to
> do", I will mention that we are trying to establish an interconnection
> that will sustain 2016 channels or 84 T1s, and 5000 DIDs. We are not
> trying to become a CLEC however, still feel that option 2 would be the
> better choice for reasons covered here, and some that are left
> implicit (i.e, quality, reliability of managing our own
> networks......).
>
> Your insights are greatly appreciated!
>
> Nick.
>
> --
> _____________________________________________________________________
> -- Bandwidth and Colocation Provided by http://www.api-digital.com --
> New to Asterisk? Join us for a live introductory webinar every Thurs:
>                http://www.asterisk.org/hello
>
> asterisk-users mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.digium.com/pipermail/asterisk-users/attachments/20130622/8540ed33/attachment.htm>