21.9.2. Deleting Non-Voice Services at the IP Port 
To delete individual NV services at the IP port, enter (the optional OFFTYPE parameter
with its
settings DC=“deactivate with camp-on“ and DI=“deactivate immediately“ takes over the
mandatory task of disabling all terminals prior to deletion and enabling the
remaining terminals again afterwards; this would otherwise be performed with the
AMO DSSU):DEL-SBCSU:STNO=number,SVC=param [,OFFTYPE=DI];
IMPORTANT:
If you used
OFFTYPE=NL (no lock) to delete an NV service,
then you must use DSSU to put the remaining terminals back into operation (in
particular the voice terminal as this was not deleted).