Well, Ingate Siparators are a known good solution for this. Would run around a couple thousand US$ with sip trunking options and remote user nat traversal options for the low-end 19 unit.
I’ve also utilized Patton gateways for this functionality (SmartNode 45xx series has 2 ethernet interfaces) for 8 or so SIP trunks. ~$350.00 for a 2 fxo SmartNode 4522. Patton also has a new line of devices the Smartnode 52xx which are meant to specifically do this as well. I haven’t tried the 52xx but if it’s running the same firmware it should be good. Handles about 32 simultaneous inbound calls. ~$1299. Mike From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, April 23, 2010 5:40 AM To: sipx-users Subject: [sipx-users] Gateway recommendation Hi all, Because of ITSP compatibility issues, I'd like to use a gateway device to connect via SIP to the ITSP. Therefore, I'll need a device that could be gateway on one end (SipX-end) and B2BUA on the other side (ITSP-end). There will be no more than 5 simultaneous calls (at most). Could anyone recommend me a device? Kind regards, Remco.
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