Solved

VoIP between 2 sites with analog PBX

Posted on 2006-10-24
5
588 Views
Last Modified: 2010-04-12
Hello all,
we have 2 sites, let's say Site 1 and Site 2.

Site1 is the main site with local PTT and we have a PBX that have analog lines internally. Only analog, no digital or IP possible.

Site2 is a remote site with a wireless backhaul (perfect link). We want to have Site2 using the same PBX.

What we were thinking is:
PTT--PBX--Analog line--Analog VoIP gateway on Site 1====Wireless IP Link====Analog VoIP gateway on Site 2--Analog line--Regular Analog Phone
Can it work and if yes, what type of harwarde should we use if not, any recommendation ?

thanks for any help
0
Comment
Question by:lemaitre75
  • 2
5 Comments
 
LVL 36

Expert Comment

by:grblades
ID: 17810329
How many spare ports do you have of either type?
You have FXO ports which are the type designed to connect to the phone network.
You have FXS ports which are designed to connect to analogue phones.

You would need a FXO port for every simultaneous call you wish to make to the remote pbx. You would need a FXS port for every simultaneous call you wish to receive from the remote site.

Check to make sure you have enough spare ports available for your needs and then I can advise on what equipment to get.
0
 

Author Comment

by:lemaitre75
ID: 17814226
We have enough ports but we just need 1 line (1 concurrent call) in that case

thanks
0
 
LVL 36

Accepted Solution

by:
grblades earned 250 total points
ID: 17828407
If site2 is going to have just a single phone then it makes things easier.

At site1 get a Linksys SPA-3102 (http://www.voipsupply.com/product_info.php?products_id=1646) and link its FXO port to a FXS (standard analogue telephone port).

At site2 get a Linksys SPA-1001 (http://www.voipsupply.com/product_info.php?products_id=320) and connect an analogue phone to it.

Then you just need to configure both devices to connect to each other.
When the PBX rings the phone the SPA-3102 passes the call onto the device at site2 and when the phone is answered the call is connected.
When someone uses the phone at site 2 then the SPA-1001 will provide dial tone and listen for the dialed digits and when finished it will pass the call over to sitte1 and the SPA-3102 will pick up the analogue line to the PBX and dial the digits and then connect the call.

You can buy additional pairs of these devices to add more phones to site2 if you wish.
Its gets more complex if site2 has its own pbx and you want to link them both but it does not sound as if this is the case for you.
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In my office we had 10 Cisco 7940G IP phones that were useless as they were showing PROTOCOL APPLICATION INVALID when started. I searched through Google and worked for a week continuously on those phones, and finally got them working. This is a di…
Hey there Heard about jingle, the add on for XMPP that enables point to point audio between two XMPP clients. No server config necessary. Actually quite a cool feature. However, how good is it if you can not use those voice capabilities to do a P…
This Micro Tutorial will give you a basic overview how to record your screen with Microsoft Expression Encoder. This program is still free and open for the public to download. This will be demonstrated using Microsoft Expression Encoder 4.
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

776 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question