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What is the Difference Between an FXO Adapter and an FXS Adapter?
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Grandstream HT813 Hybrid Analog Telephone Adapter with FXS and FXO Ports
HT814 4 FXS Port 4 SIP Profiles ATA
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Cisco SPA112 Dual FXS Port ATA Adapter
Cisco SPA112 Dual FXS Port Phone Adapter
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Linksys SPA2102 Analog VoIP Adapter with 2 FXS Ports (Free to do pre-
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SPA2102-AS Cisco SPA2102 Phone Adapter with Router 2 x RJ-45 2 x FXS E
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