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Setting up the SPA3102 was straightforward, provided you understand basic SIP configuration. The dual functionality is really what sold me; having both the FXS port to connect a standard analog phone and the FXO port to interface with a PSTN line in one compact unit simplified my rack significantly. I was particularly impressed by how reliably it handles fax pass-through, which is often the weak link in these types of converters.
Everything negotiated cleanly, maintaining surprising audio quality for its age.
I really love how robustly this device performs once configured. The PSTN failover function, allowing calls to seamlessly switch back to the analog line if the network drops, is an incredibly valuable feature for business continuity that I tested successfully. Furthermore, this gateway proved very stable during extended testing, enduring numerous short and long duration calls without any noticeable jitter or drops.
It truly lives up to its 'genuine' description.
If you are currently running a mixed environment—perhaps integrating a legacy fax machine or needing a backup connection via traditional copper—this product is a fantastic value proposition, especially being a used genuine unit. It's built like a tank, unlike some of the newer, flimsier VoIP adapters I’ve encountered recently. Those needing stable FXS/FXO capabilities should certainly consider grabbing the Cisco Linksys SPA3102 FXS+FXO PSTN Functional Gateway Fax Protocol while these reliable units are still available.
Overall, this specific Linksys gateway exceeded my expectations for a used piece of networking hardware. It does exactly what it promises with stability and excellent fax protocol handling. Highly recommended for telephony engineers needing reliable bridging functionality!
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