Nortel Meridian 1 Manual page 106

Page 96 of 120 Room Status
553-2311-316 Standard 10.00
System Class of Service (SCOS) is the basic default level and usually has the
fewest restrictions.
Controlled Class of Service (CCOS) is used to restrict the type of calls a guest
can make from the telephone.
Enhanced Controlled Class of Service (E1 and E2) simply adds two more
levels of restrictions to increase the flexibility of your system.
For example, a telephone with SCOS is allowed to make toll and Central
Office calls as well as room-to-room calls, while a telephone placed in CCOS
can only make room-to-room calls. Toll and Central Office calls are not
allowed.
Your Class of Service restrictions may vary from this example. Check with
your System Administrator if your are not sure of your Class of Service
restrictions.
June 1999