
ENG3.1
2G GSM Gateway Voce
Supplementary Services
3. SUPPLEMENTARY SERVICES
The supplementary services are available if supported by the GSM network operator. They can be enabled or disabled with a
DTMF phone connected to 2G GSM Gateway Voce by dialing special sequences keys.
3.1. CALL FORWARDING
It is possible enable or disable the call forwarding for the following calls:
• Unconditional
• If Busy
• If no answer
• If no reachable
The supplementary services can be enabled, disabled and checked with a speific keys sequence, according to the following
table.
When the supplementary service is enabled, it remains active until you digit the disactivation sequence.
1. Hook off the phone, you hear the dial tone.
2. Enter the code to enable or disable the Call Forwarding (using a DTMF phone)
3. If the service is successfully enabled or disabled, you will hear the configuration tone (continuous tone repeated twice).
4. Hook on the phone to complete the procedure.
COMMAND
FUNCTIONALITY
*21*Number#
Enable Call Forwarding Unconditional
**21*Number#
#21#
Disable Call Forwarding Unconditional
##21#
*#21#
Status Request Call Forwarding Unconditional
*67*Number#
Enable Call Forwarding Busy
**67*Number#
#67#
Disable Call Forwarding Busy
##67#
*#67#
Status Request Call Forwarding Busy
*61*Number#
Enable Call Forwarding No Answer
**61*Number#
#61#
Disable Call Forwarding No Answer
##61#
*#61#
Status Request Call Forwarding No Answer
*62*Number#
Enable Call Forwarding No Reachable
**62*Number#
#62#
Disable Call Forwarding No Reachable
##62#
*#62#
Status Request Call Forwarding No Reachable