VOIP 3RD PARTY ROUTER CONFIGURATIONS 1

[NewbieTC]

Does anyone know how to setup a Linksys, D-Link or any other simple router to VOIP IP Office? I have looked everywhere on the net but I do not seem to find any information on this subject. I have opened all the ports that I was supposed to, created all the triggers and setup all the applications via virtual servers in the router software setup...no workeeeeeeeeee!


Please Help!

Newbie or Newfy I am starting to wonder...

 

[NuggiFirst]

You are aware of the huge port-span for the voicestream ??
I can't remember which span it is, but without this only the signalling will get through.

I have never implemented VoIP in this way. I have allways used VPN-tunnels, which works great.

 

[NewbieTC]

Thanks for the info...yes I was aware of it ...and I have opened a huge range of ports and I am still baffled why it still doesn't work.

If a VPN tunnel is the way to go can a Linksys router like the Weirless G (WRT54G) support VOIP over VPN and how do you go about setting this up?

Newbie needing details...

 

[NuggiFirst]

There is really no big trick in it..

A "normal" VPN-tunnel is completely open.

Given that the tunnnel is up and running, and the LAN on the IPO-side is: 192.168.0.0 with mask: 255.255.255.0. The local VPN-box has the following IP: 192.168.0.1

The LAN on the phone-side is 192.168.10.0 with mask: 255.255.255.0. The local VPN-box has the following IP: 192.168.10.1

The IPO needs info about the LAN on the Phone side, so create an IP-route like this:
IP adress: 192.168.10.0
Mask: 255.255.255.0
Gateway: 192.168.0.1
Destination: LAN1 (normally!)

Make sure the IPO is equiped with a VCM-card (or it's a Small Office Edition ;-) ), and that "Autocreate Extn" is enabled in System/Gatekeeper. You don't need to create any extension. The IPO is now ready!

Connect your laptop loaded with the correct manager to the "Phone LAN". Make sure there is no open config. Set File/preferences to "255.255.255.255" (Broadcast). Make sure that in File/Change working directory, that "Binary directory is set to C:\Programmer\Avaya\IP Office\Manager\ (in a normal install that is!). Open "View\TFTPlog".

The following example is given that a DHCP-server is present:
Now connect the IP-phone, and press "*" when the display says "Press * to configure". Set "Phone IP" to "0.0.0.0". Set "CallSv" to the IPO's local IP-adress, set "Mask" to "0.0.0.0", set "Router" to "0.0.0.0", set "FileSv" to the laptop's IP-adress. Don't touch any other settings. Use the "*" key as ".". If you mistype, delete with "Speaker", "OK" is the "#" key.

The phone should now reboot. After a while it should load it's bin-files, which you can see in the phone-display, and in the TFTP-log. After a while it should ask "Extn=", type the desired Extn-number and press "#". Then it asks "Password=", just type some random numbers here and press "#".

The phone should now be up and running ;-)

 

[MrIPO]

Because the Linksys are a VERY cheap and Nasty router if you experience any VoIP quality related issues you have no mechanism on the router in order to start tackling the problems.

Remember as well when performing VoIPoVPN the bandwidth is roughly twice the bandwidth required for a standard G.729a call @ 20MS over a Frame Relay Tail, with no Header Compression. That being approx 68k to 70k, depending on L2 transport.

Umm anotherprivatebuild !!!

 

[NewbieTC]

Thanks NuggiFirst! Thanks MrIPO!
NuggiFirst You state "...given that the VPN is up and running..." do you mean the two sides are running software Microsoft VPN or a dedicated VPN router that is running hardware VPN?
NuggiFirst or MrIPO, If it is the latter which VPN router appliance product would you use? Again if so would this work with an IP hard phone plugged directly into the VPN router appliance from the remote location? Certainly, I would think, this example would not work with the MS software VPN because no computer is present to authenticate a VPN on the remote side with the IP hard phone.

 

[NuggiFirst]

Yes i'm talking about hardware VPN.
I have no experience with Linksys products. In the cheaper segment, I would recommend ZyXel ZyWall 5 and upwards, since these have a well-functioning although primitive QoS mechanism. Another good product is Intermate Trustgate, which is only sold in some parts of Europe though. The Intermate has a very logical and wellperforming Qos!

MrIPO has an important point! The 8 kbit/s bandwith requirement of G729 grows to about 50-60 kbit/s over a hardware VPN. G711 uses about 120 kbit/s.

 

[JeSTeROCK]

i have seen 30k per call on a cisco router with header compression over a vpn

 

[NewbieTC]

NuggiFirst...

I have followed your instructions to the letter. I have established a VPN tunnel between 2 VPN routers. The tunnel is up and running with the information in the instructions you provided me (thanks!). After establishing the VPN tunnel it shows connected but the IP hard phone still does not see the IPOffice network (192.168.0.0). I tried DHCP and Static etc...In fact I cannot ping anything from the IP hardphone network (192.168.10.0) to the IPOffice network (192.168.0.0). The error states host not found as it would normally shows when it does not see the range of IP addresses being in the same range as the local addresses. Should you not see all the remote computers as we now have a dedicated link between networks which allows me to see all the network printers and computers?

I am baffled at this...can you or anyone help?

 

[JayNEC]

QOS over the internet through a VPN is almost useless. You'll have QOS from the POV of the site to site traffic (inside the VPN tunnel), but outside that virtual tunnel, packets can still get dropped, lost or rerouted.

All your trafffic will still be best effort. It's the nature of the internet.

 

[TheMitelGuy]

networkA = your main network
networkB = your secondard network
routerA = router on the main network
routerB = router on the secondard network

Can your routerA ping routerB? Can routerB ping a device on networkA?

 

[NewbieTC]

TheAvayaGuy Questions and Answers:

Can your routerA ping routerB? 
Answer: YES

Can routerB ping a device on networkA?
Answer: NO

networkA = your main network
networkB = your secondard network
routerA  = router on the main network
routerB  = router on the secondard network

 

[mytelecoms]

Definately go for a good router at each end. If you can't stretch to a Cisco or similar, then Draytek run a line of products which are perfect - the Vigour 2600 or 2900 for Ethernet. Some of their routers are even specifically designed to convert and compress voice traffic using G.729(a), and they are hardware VPN appliances. Of course you would use IP Office to convert and compress the voice, but it's always encouraging to know they have full support for it.

 

[TheMitelGuy]

How is this VPN setup? Is it from RouterA to RouterB or vice-versa? I'm assuming you have setup the VPN on RouterA to login RouterB based on what you have said?

 

[NewbieTC]

I am not sure what you are asking...I gather is it a two way VPN is the question? The answer would be YES.
Is it going only in one direction, NO.

From what I undertand thy both log in and handshake before the connection is complete. They both match shared keys and then they are connected.

This VPN is not setup like a hub and spoke.

I hope I have made my setup as clear as can be...