[asterisk-users] Feasibility Request

[Jonathan Creasy]

Jeremy,

Both 1 and 2 are feasible and have been done by many people including 
the company I currently work for and the company I previously worked for.

For the analog lines, I would recommend a channel bank with analog 
ports. If you want to redirect inbound calls on an analog line as well 
as send calls via analog to a PBX to support 12 lines you will need 24 
ports. If you are only using 12 ports a channel bank may not prove to be 
cost effective. If you use a channel bank then the hardware for system 1 
and system 2 could be the same exact system.

-Jonathan

Jeremy Mann wrote:
>
> I have a ton of Nortel MICS/CICS phone systems and am looking for an 
> easy way to integrate them.
>
> Two questions arise:
>
> 1. Is it feasible to use asterisk as a Man in the Middle for a T1 PRI 
> system? The idea is to intercept outbound calls from the Nortel PBX 
> and redirect them via VoIP to another asterisk box at another branch 
> transparently(thus saving the LD cost). Otherwise I’d pass the call on 
> to the T1 for outbound processing. Our Nortel is already PRI equipped, 
> the PRI would just come from the Asterisk box instead of the Telco 
> directly.
>
> 2. Is it feasible to use asterisk as a Man in the Middle for Analog 
> lines? I’d be using anywhere from 4-12 lines depending on location 
> size. I’d like to do the same feature as above(intercept outbound 
> calls and redirect them using VoIP if they are inter-office calls.
>
> a. I’d also like the VoIP trunks to be used for outbound calls in the 
> case of PSTN downtime or busy. For example, all 4 outgoing lines are 
> in use, person 5 wants to make an outbound call and it gets redirected 
> to one of my T1 offices. I’d attach their outbound caller ID to make 
> it appear as the call came from that location.
>
> My inevitable hope is to reduce my analog presense in smaller 
> communities to 1 primary Line for 911/emergency calling, and to get a 
> published presense in the community. I’d then beef up my T1 locations 
> to handle more VoIP based calls. Currently we’re using on the order of 
> 30k minutes a month of LD just intercompany, about 10k external 
> (IntraLATA).
>
> I’d also like any insight or suggestions on uptime. We’re a healthcare 
> organization so 5-9’s is what we’ll require.
>
> Any suggestions on hardware configs(or better yet, Bids!) would be 
> appreciated as well. I don’t need VoIP capable phones yet, but if the 
> system works well enough we’d probably startup our next 
> location(averaging 3-6 per quarter) with a pure VoIP system with 
> Nortel fallback(again, 5-9’s is critical).
>
> I’m located in Dallas, TX for any bids that might include 
> installation. We have a presense up to about 400 miles west of here.
>
>
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