How to Setup T.38 Fax

Open grandstream page 
 Hint. Can call *** then enter 02 to obtain IP address 
 

 Click on FXS Ports tab 
 Update the following values to the following 
 Primary SIP Server:  sbc.simplelogin.net 
 SIP User ID: Copy from Portal 
 Authenticate ID: Copy from Portal 
 Authenticate Password: Copy from Portal 
 Name: Fax1 
 Register expiration: 5 
 Disable Call-waiting: NO 
 Disable Call-waiting Caller ID: NO 
 Disable Call-waiting tone: NO 
 Perferred Vocoder (in listed order) 
 PCMU 
 G729 
 G722 
 Fax Mode: T.38 
 Jitter Buffer Length: High 
 Click Update 
 Click Apply 
 Click Reboot 
 

 Go back to portal 
 turn on Caller ID Override & set to fax number. 
 Assign or purchase numbers