I'm looking to be able to connect two offices (very low call volume) in separate towns with one POTS line over VoIP using Asterix.
My original plan was to use one of the countless X101P PCI cards that are on eBay to connect a computer running Asterix to the local POTS service, and then use an ATA in the the other town so both offices are using the same POTS line.
I heard quite a few horror stories regarding the clone x101p cards and the digium cards are cost prohibitive for us so the next middle ground is to use the external gateways such as:
- VP168I (Gnet's VOIP IAX2 GATEWAY WITH 1 X FXS 1 X PSTN & 1 X WAN)
- Sipura's SPA-3000 Analog Telephone Adapter
- Linksys SPA3102 VoIP Router SIPV2 1FXO 1RJ-11 PHONE/FAX with 2PT Switch
Gateway: refers to any of the three external boxes mentioned above - my terminology may be incorrect but this is to just to clarify what I'm referring to
My new plan is to use one of the gateways to act as the FXO for the Asterix system and the FXS port on the gateway as my ATA to the PBX for the analog phone in office 1, then another ATA in office 2 with STUN/SIP to connect to Office #1's PBX.
Asterix will be handling extension calls between offices (so we don't tie up the line talking to each other) and the voicemail feature.
note: From gateway to PBX will be on the same LAN, though through the internet from PBX to Office #2
Any suggestions on hardware? From what I've read if the Gnet actually _does_ act as a gateway the IAX2 may work better for talking directly to the Asterix system.