We have old PSTN analog cable used for PABX, and we want to connect it to Cisco Voice Gateway , it can be connected via FXO card but the problem is we used 10 analog lines for getting simultaneously calls, is it possible to be solved via FXO cards? or need to look for different solution?
SPA8800 have four FXO ports so you need three pieces of such equipment.
I'm not expert for this (you are on wrong forum for such kind of question) but something like Cisco 2911 + EVM-HD-8FXS/DID + 2xEM-HDA-6FXO may fulfill your requirements as well although it's so far from "cheap" solution.
It seems that more important limit is - what's available in particular country. For example, in Europe, the FXO lines are no longer used for new "trunk" interconnections.
The most common solution for carrier-to-customer interconnection is E1/ISDN30 or bundle of ISDN2. Also, native SIP or H.323 trunks become common here.
We are not using Cisco Voice Gateway for interconnection at all. We decided to use other brand ISDN30<->SIP bridge in some countries and native SIP trunks in other countries. So sorry, I have no personal experience with such kind of equipment. And I suspect no one else will respond you here. Ask in more appropriate forum - this forum is dedicated to SMB ATA devices.
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