Westermo GDW-11 - Manual (Page 316)

316 GSM sequences list 6615-2220
Service Codes (SC)
33 call barring of outgoing call
330 all barring service (only for deactivation)
331 call barring of outgoing international call
332 call barring of outgoing international calls except to HPLMN
333 all outgoing barring service (only for deactivation)
35 call barring of incoming calls
351 call barring of incoming calls if roaming
353 all incoming barring service (only for deactivation)
Call waiting
BS values are the same as above.
Activate *43*BS#
Check status *#43*BS#
Deactivate #43*BS#
Number presentation
CLIP check status *#30#
CLIR check status *#31#
Suppress CLIR for a *31#PhoneNumber
voice call
Invoke CLIR for a #31#PhoneNumber
voice call
COLP check status *#76#