Running multiple VoIP providers on my LAN?

[scott2020]

On my setup just to be sure, I configured each of my SIP phones and ATA's to use different SIP and RTP ports. I have the Linksys from VOIPo which I believe uses 5060 and 5061. I also have a Cisco ATA186 that I set to use 5066, and a Grandstream that uses 5101. My Polycom uses something like 5068. The RTP ports are usually above 16000 and sometimes are random depending on the device, but I set them differently if I can.
Scott

[chpalmer]

I always ask someone how they can have multiple computers browsing the internet if they dont think multiple devices using the same port can work...

I have 4 ata's at work all configured to port 5060 no problems. Guess it depends on the chosen network equipment though...

[Russell]

I always ask someone how they can have multiple computers browsing the internet if they dont think multiple devices using the same port can work...

I have 4 ata's at work all configured to port 5060 no problems. Guess it depends on the chosen network equipment though...

Very nice analogy.

Fwiw, I have VOIPo's ATA and an old Vonage (Gizmo5, Freedigits) one on the same ports (5060, 5061) behind the same router without an issue.

[zcnkac]

As long as port forwarding is not used, multiple ATAs should not be a problem.