[Asterisk-Users] Rhino Channel Bank or ADIT 600

[cmould]

Thanks.. definately will keep the elist posted. Today I got a cost 
comparison from other PBX vendors and integrating the legacy phones. 
Nortel and Asterisk with the RHINO channel banks are similar (about US$ 
36,000 in equipment costs).
C F wrote:

>On Tue, 22 Mar 2005 19:36:26 +0000, cmould <carey.mould at e2team.com> wrote:
>  
>
>>I am forklifting a Merridian option 51c with 112 Nortel Digital Handsets
>>and 400 analog units. For the analog units  I have quotes for 9 ADIT 600
>>48 port fxs units and 17 Rhino 24 port FXS channel banks. I have used
>>neither.  Which is the best choice? The price difference is not that
>>great.  I am looking at Citelinks 24 port Handset Gateway for the Nortel
>>Digital units. (Any other suggestions would be appreciated).
>>    
>>
>
>I'm actually trying to accomplish the same thing. 360 analog units,
>just hung up the phone with carrier access tech support, they where
>very helpful. plus this:
>http://lists.digium.com/pipermail/asterisk-users/2004-December/077099.html
>looks like I'm going with Adit. But instead of T1 from the Adit to * I
>plan on using CMG02 cards with the Adit 600, that gives me 9 Adit
>boxes, each one will have 5 FXS cards (5*8=40) and one CMG card,
>9*40=360 FXS ports. That will make the Adit handle the bulk of the
>transcoding, and hence the CPU eat up.
> 
>  
>
>>Also how many Asterisk servers would I need to handle 200 IP units in
>>addition to the the above referenced legacy units? How do I size the
>>server? Do I put voice mail on a different box?
>>    
>>
>
>This is only a problem if you will be doing lots of transcoding (Zap <
>-- > SIP/G729 < -- > G711), if however you will be staying strictly
>VOIP and no codec transcoding (thats why I'm going with the CMG cards
>above, although it has to convert from MGCP to SIP, it doesn't eat up
>as much as from G711 to G729, or Zap to SIP), then you should't have a
>problem using one Dual Xeon box. If you must use telco provided T1s,
>you can either use another Adit 600 with a CMG on it, and hand it off
>to asterisk that way, or you could have one asterisk box just for the
>handling of the T1s, however asterisk with 4 T1s using a Digium quad
>T1 card, might (this is from experience, some people do have and
>others don't) have some echo problems. The other solution would be to
>have the 200 IP units connected to one box, and the analog ones
>connected to the other, and then use IAX from box to box, but I'm not
>sure it is better. I for myself am thinking of going with Quad Xeon
>boxes, an overkill? maybe. But I've never seen anybody crying for
>getting a better system than they need.
>
>Putting VM on a different box I don't think will accomplish anything,
>maybe make it even worse, since you will need the phone connected
>asterisk to bridge the call and open a stream to the voicemail box,
>maybe I'm wrong, but this is what I think.
>
>Also don't forget to look at this:
>http://www.voip-info.org/wiki-Asterisk+dimensioning
>
>Hope this helps, what ever your decision please put it on the list so
>others know about it. I plan on putting my installation on the wiki
>when it is done and running (another 3-4 months).
>
>  
>
>>Your comments much appreciated.
>>
>>
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>>    
>>
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