User Guide
Grandstream Networks, Inc., 1297 Beacon St., 2
nd
 Flr, Brookline, MA 02446 USA 
Tel: (617) 566-9300, FAX: (617) 249-1987 
www.grandstream.com
3.  User subscriber information:  User ID, Authentication ID, Password (provided by your VoIP service 
provider). 
4.  HandyTone supports “Plug-n-Call” if your ITSP (Internet Telephony Service Provider) provides this 
automatic provisioning service. Ensure the HandyTone has an internet connection (either DHCP or static IP in 
your internet ready network), then power up the phone.   
5.  Please contact your ITSP for additional settings that may be necessary to configure the phone. 
Grandstream Networks, Inc. Corporate Headquarters 
www.grandstream.com
info@grandstream.com
1297 Beacon Street, 2
nd
 Floor,   
Brookline, MA USA 02446 
Tel : +1 (617) 566 – 9300   
Fax: +1 (617) 247 – 1987   
About Grandstream Networks 
Grandstream Networks, Inc. is an award-winning designer and manufacturer of next generation IP voice & video 
products for broadband networks. Grandstream’s products deliver superb sound and picture quality, rich telephony 
features, full compliance with industry standards, and broad interoperability with most service providers and 3
rd
party SIP based VoIP products. Grandstream is consistently recognized in the VoIP industry for their innovation, 
affordability and superior value in their products. Grandstream Networks is a private company headquartered in 
Brookline, MA with offices in Los Angeles, Dallas and China. For more information, please visit 
www.grandstream.com. 
Declaration of Conformity for HandyTone 502 (page 4-5) 
Declaration of Conformity for HandyTone 503 (page 6-7) 
Declaration of Conformity for HandyTone 286 (page 8-9) 
Declaration of Conformity for HandyTone 486 (page 10-11) 
  Last updated on April 1, 2008 
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