Gateways and ATAs FXO Gateways and ATA's (GXW 4100, and HT 503)
Firmware 1.0.16.3 for HT503 released as official
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Dear Grandstream Customers, Firmware 1.0.16.3 for HT503 is now released as official. Here is the link to the release notes: http://firmware.grandstream.com/Release_Note_HT503_1.0.16.3.pdf The firmware and release note…