TheNetAssistancLV1Online
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By TheNetAssistanc 2025-07-05 16:27:11

Critical Issue: WhatsApp Voice Calls / SIP Not Working - Symmetric NAT Concern

Dear TP-Link Support Team, I am writing to report a critical issue with my TP-Link router, model er 605 and er707. I am unable to consistently use WhatsApp voice/video calls, and I also experience sig