Grandstream Networks HT503 FXS/FXO Manuel D’Utilisation

 

•   “*” shifts down to the next menu option 

•  “#” returns to the main menu 

•  “9” functions as the ENTER key in many cases to confirm an option 

•  All entered digit sequences have known lengths - 2 digits for menu option and 12 digits for IP 

address. For IP address, add 0 before the digits if the digits are less than 3 (like 192.168.0.26 
should be key in like 192168000026, no dot needed while input). Once all of the digits are 
collected, the input will be processed. 

•  Key entry can not be deleted but the phone may prompt error once it is detected 

 

There are currently two methods to make an extension number call: 

a) Dial the numbers directly and wait for 4 (default) seconds.  

b) Dial the numbers directly, and press # (assuming that “use # as dial key” is selected in the web 

configuration). 

 

E

XAMPLES

: 

•  To dial another extension on the same proxy, such as 1008, simply pick up the attached phone, 

dial 1008 and then press the # or wait for 4 seconds.  

•  To dial a PSTN number such as 6266667890, you may need a prefix number followed by the 

phone number. Please check with your VoIP service provider for this information. If your phone is 
assigned a PSTN-like number such as 6265556789, you will most likely follow the rule 1 + (the 
number) – 16266667890.  Press # or wait for 4 seconds.  

 

Direct IP calling allows two parties, that is, a HT with an analog phone and another VoIP Device, to talk to 
each other in an ad hoc fashion without a SIP proxy. This kind of VoIP calls can be made between two 
parties if: 
 

•  Both HT503 and other VoIP Device (i.e. another Handytone ATA or Budgetone SIP phone or 

other VoIP unit) have public IP addresses, or  

•  Both HT503 and other VoIP Device are on the same LAN using private IP addresses, or  
•  Both HT503 and other VoIP Device can be connected through a router using public or private IP 

addresses (with necessary port forwarding or DMZ).  

 
T

1.  Pick up the analog phone (or use the speakerphone),  

2.  Access the voice menu prompt by dial “***”  

3.  Dial “47” to access the direct IP call menu 

4.  At voice prompt “Direct IP Calling” and dial tone, enter a 12-digit target IP address to 

make a call. 

 
Destination ports can be specified by using “*4” (encoding for “:”) followed by the port number.   
 
 

Grandstream Networks, Inc. 

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