Call Features ................................................................................................................ 27
Configuration Guide .................................................................................................... 29
Important Settings ................................................................................................................................ 31
NAT Settings ................................................................................................................................. 31
DTMF Methods ............................................................................................................................. 32
Preferred VOCODER (Codec) ...................................................................................................... 32
Advanced User Configuration .............................................................................................................. 40
Software Upgrade........................................................................................................ 63
Configuration File Download ................................................................................................................ 64
FACTORY RESET ............................................................................................................................... 67
Reset Button ........................................................................................................................................ 67
IVR Command ..................................................................................................................................... 67
EXPERIENCING THE HT502 ....................................................................................... 69
HT502 User Manual
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