Grandstream Networks Grandstream HandyTone HandyTone-488 User Manual

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Congratulations on becoming an owner of HandyTone-488.  You made an excellent choice 
and we hope you enjoy all of its capabilities.  
 
Grandstream's HandyTone-488 is an all-in-one VoIP integrated access device that features 
superb audio quality, rich functionalities, high level of integration, compactness and ultra-
affordability.  The HandyTone-488 is fully compatible with SIP industry standard and can 
interoperate with many other SIP compliant devices and software on the market.  
 
 
Grandstream HandyTone-488 is a new addition to the popular HandyTone product family. It 
is an enhanced model compared to the award-winning HandyTone-486 in that it allows call 
origination and termination from/to the PSTN network (via FXO port) remotely and automated 
emergency call routing through PSTN network.