Grandstream HT503

Configuration Screenshot

FSX Section

HT503-FXS_1.png

HT503-FXS_2.png

HT503-FXS_3.png

HT503-FXS_4.png

HT503-FXS_5.png

HT503-FXS_6.png

HT503-FXS_7.png

HT503-FXS_8.png

HT503-FXS_11.png

HT503-FXS_12.png

This two screenshot are relevant for sending and receiving faxes using T38 VoIP FAX protocol

HT503-FXS_9.png

HT503-FXS_10.png

NAT Traversal issues

HT503-NAT_1.png