Grandstream Networks Handy Tone 386 User Manual

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To use this feature, dial “*90” and get the dial tone. Then dial 
the forward number and “#” for a dial tone, then hang up. 

*91 

Cancel Busy Call Forward 
To cancel “Busy Call Forward”, dial “*91” and get the dial 
tone, then hang up 

*92 

Delayed Call Forward 
To use this feature, dial “*92” and get the dial tone. Then dial 
the forward number and “#” for a dial tone, then hang up. 

*93 

Cancel Delayed Call Forward 
To cancel this Forward, dial “*93” and get the dial tone, then 
hang up 

Flash/Hook  When in conversation, this action will switch to the new 

incoming call if there is a call waiting indication. 
When in conversation without an incoming call, this action 
will switch to a new channel for a new call. 

 

 
When HandyTone-386 is out of power, the RJ 11 line jack on the HandyTone-486 side will function as 
a pass through jack. The user will be able to use the same analog phone for PSTN calls. 
 

 
HandyTone-286 supports FAX in two modes: T.38 (Fax over IP) and fax pass through. T.38 is the 
preferred method because it is more reliable and works well in most network conditions. If the service 
provider supports T.38, please use this method by selecting Fax mode to be T.38. If the service 
provider does not support T.38, pass-through mode may be used. To send or receive faxes in fax pass 
through mode, users will need to select all the Preferred Codecs to be PCMU/PCMA. 
 

 
Following tables show the LED light pattern indication.  
 

 indicates abnormal status 

DHCP Failed or WAN No Cable  

Button flashes every 2 seconds (if DHCP is configured) 

HandyTone-386 fails to register 

Button flashes every 2 seconds (if SIP server is configured) 

 
 

 indicates normal working status 

Message Waiting Indication 

Button flashes every 2 seconds 

RINGING Button 

flashes at 1/10 second 

RINGING INTERVAL 

Button flashes every second