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Need a VoIP phone with Analog pbx solution

Posted on 2006-07-17
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Last Modified: 2012-06-21
Hi,

I currently have two Avaya ACS Partner systems at two offices.  I also have a point to point T1 connection.  I have 2811 cisco routers that I am using for the point to point.  I am looking to forward calls from an analog phone across the WAN to a VoIP phone.  Can this be done?

thanks,

Todd
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Question by:tashmore
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by:Reid Palmeira
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this kind of depends on your carrier and the way you have the solution set up. if the analog phone is sitting behind an ATA (analog telephone adapter) then it would really be a voip to voip call and shouldn't be any trouble at all. if you've got the analog phone hooked onto a different provider/carrier than the voip phone it could be problematic or at least costly for any toll charges.
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by:tashmore
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I was thinking about the following:

Avaya ACS(Extension #)-->Voice Gateway-->WAN<--Voice Gateway<--Avaya ACS (Extension #)

Does this seem feasible?  If so can I just add Voice Cards to my routers?  Or will I need separate hardware for the Voice Gateways?
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by:Reid Palmeira
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that should be okay. one catch might be e911 service. you'll have to check with your provider on that. You don't want to dial 911 from Miami and have the office in Tampa get a visit from a confused policeman.

what are you looking at for the voice gateway? you might be able to do that sort of thing with a single Asterisk
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by:tashmore
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I'm looking at Sipura SPA-3000's, that way I can just use the current Avaya phones.
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by:tashmore
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problem!  Cannot seem to get the phone to power up when going through the Sipura box.  Any help?
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by:Reid Palmeira
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what kinds of phones are you using? If they're part of the ACS they may be tied in to that. typically the ATA's are used for regular old analog phones, the ACS partner phones aren't all POTS type analog phones.

When you say "power up" what do you mean? again, some of the ACS partner phones still require external power and the ATA won't deliver this because they would expect a basic analog phone and those phones typically expect a line powered by on the CO side.
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by:tashmore
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I have an Avaya Partner-18D phone (18 buttons).  When connecting directly to the ACS pbx the phone will "power UP" or show a display and give dial tone.  

I understand now that the ATA will not provide the power to the phone.  Is there a small voip gateway that would allow this to happen?

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by:Reid Palmeira
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Ok i think i was confused on what you're trying accomplish. My original understanding was that you wanted to forward calls from an analog POTS phone (not necessarily one of the ACS partner phones but like a cheap $5 phone) to a VoIP phone. typically, in order to get that phone to talk to a VoIP setup you'll need your analog phone sitting behind an ATA to talk to your VoIP provider and get it service that way. So it looks like

analog phone->ATA->network->VoIP provider->VoIP phone.

The Avaya ACS system is really a digital telephony system so it won't work with an ATA. Avaya does have IP telephony gateways you can put the system behind to connect them to forward one extension to another phone. These kinds of gateways though do require additional hardware pieces (unless you already have them) to get something like:

Analog ->Voice Gateway ->WAN -> Voice Gateway -> Avaya ACS (Extension #)
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by:tashmore
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You are right, I originally stated a voip phone.  I didn't realize I could use an analog phone at first.  You have helped clarify things.  What I am really looking for is a voice gateway solution.  I want to keep my two Avaya pbx systems and phones (as is) and be able to transfer calls to certain extensions across the point to point.

Can you recommend a good voIP gateway solution?  something like:

Avaya pbx-->extension 23-->gateway-->WAN<--gateway<--extension23<--Avaya pbx

Thank you for "sticking with me" on this question.

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Reid Palmeira earned 125 total points
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If you have the skillseet available, Asterisk would make a good gateway http://www.asterisk.org/ and if not, there are some decent commercial solutions out there. Nicom makes some decent products http://www.nicomtech.com/content/catalog/voip-ip-communications-solutions.htm
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