[WXC/VFX] Multiple vfx lines

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raytaylor

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#29308 2-Jan-2009 18:50

Just have a question

I havent done much with vfx lines before.

I am wondering if i can have 3 voip-analog adapters behind a router without having to forward any ports? Each would have its own vfx line

i know the voip adapters would be able to make outgoing calls because of the nat abilitys of the router but is the connection to the vfx server kept running when idle or does it close off so when a call comes in, a new connection has to in from outside?

Reason I ask is we have 3 new flats that are semi rural and they each are connected by a wireless network with ap's in wds mode but we have not yet run phone lines. I would prefer not to run phone lines and just use the existing network

Ray Taylor

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Niel

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#187050 2-Jan-2009 19:14

More than 2 lines on one account is classified as a business customer and so local calls are not free any more. But calls to any VFX number are still free.

Three devices on one line should work fine as long as you get a decent speed.

I would put the VFX boxes by the ADSL modem/router and get a couple of DECT cordless phones (not 2.4 GHz or WDECT or anything else) rather than running the VFX boxes over a wireless network. Wireless is less reliable and adds delay, and there are no buttons on the boxes anyway. That way you can also get away with only 2 boxes, as most have 2 lines per box (some newer ones only have one with a POTS fall-back).

Usually no need to forward ports.

The box will check connectivity with XNet at regular intervals (3 minutes?). A connection is made as long as you are in a call, then the connection is terminated.

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raytaylor

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#187062 2-Jan-2009 20:31

The flats are about 100m apart with various obstacles, trees, garages so cordless phones arent an option. The wifi works because the antennas are attached to the tops of the roofs above the obstacles and are directional.

The people living in the flats would have their own xnet account but i provide the physical connection. They already have the internet access going through my account but they can setup their own account with just the vfx for their phones.

The website says that you dont have to purchase the advanced feature set or go with the business line if you are connecting the phone through an xnet connection so i am assuming because my connection is with xnet, their vfx line should be able to work through my broadband as the vfx line is just tied to the xnet network, not a specific broadband account. :-)

Im using microtik wifi gear so its very reliable plus they have cellphones for backup.

Ray Taylor

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Niel

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#187100 2-Jan-2009 23:16

DECT phones have a 300m range, but you would need to get dual phones so that you have a charger that is separate from the base station. But I understand why you want to just use the existing WiFi setup and it should be fine. I would suggest the SPA2102, and you will need one for each account as you can not have two different account on one box.

You can sign up for only VFX if you want, no problem.

So you should be fine, assuming the WiFi connection has low latency (delay).

You can never have enough Volvos!

sbiddle

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#187115 3-Jan-2009 06:23

How are you planning to hook the ATA's up to the wireless network? Will the network be supporting other WiFi gear or just these ATA's?

raytaylor

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#187148 3-Jan-2009 12:39

Also if i use dect cordless phones, a fax becomes harder to send and i dont want the tennants knocking on my door each time they want a fax or something like that. I was thinking about getting some of those cordless phones that use uhf and go 5km but they are too expensive.

I have an access point in wds mode attached to the tv antenna pole and the aerial is directed back on each roof.
A cat5 cable comes down into the lounge of each flat where it connects to a network switch.
another cat5 cable then goes outside to the telecom demarcation point where the voip adapter will hook up to the cable that would normally go underground and off to the exchange. This means the phone plugs in the house work as they normally would, and the tennants can then decide if they want to use their own cordless phones or fax etc.

I dont think latency will be a problem because i see farmside offering voip over their 2way satelite service (ipstar i think) and if they can make that work then this has got to.

So as i understand it, i dont need to forward any ports to the voip adapters, and they wont fight for ports via upnp

Ray Taylor

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sbiddle

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#187169 3-Jan-2009 14:43

There is nothing wrong with using VoIP over WiFi, my only suggestion would be that WMM/WME might be essential to ensure that you have some QoS over the WiFi link for the VoIP traffic if there are going to be other devices using the WiFi. What sort of AP's are you using? If they are recent they should support WMM/WME.

Many people seem to think VoIP over WiFi is bad but if implimented correctly it works well. Linksys have even just introduced their new top of the line phone with build in WiFi and Bluetooth.

raytaylor

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#187231 3-Jan-2009 20:54

sbiddle: There is nothing wrong with using VoIP over WiFi, my only suggestion would be that WMM/WME might be essential to ensure that you have some QoS over the WiFi link for the VoIP traffic if there are going to be other devices using the WiFi. What sort of AP's are you using? If they are recent they should support WMM/WME.

I havent looked up what wmm / wme stands for but they are microtik routerboards with atheros cards and in the setup they do have qos settings to prioritise voip. Also the routing software in my routing pc also prioritises voip so that should be all good.

Ray Taylor

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raytaylor

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#188838 11-Jan-2009 19:25

In the end decided to go with 2talk for these houses.
I needed to find a wholesale voip provider for work and xnet only wanted a dealer + commission relationship where as 2talk have wholesale options and i found them alot more friendly when researching the wholesale options.

Ray Taylor

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