CLS for Restricted...

All from memory:

Fully Restricted Service
There are three levels of Fully Restricted Service:

FR2
-    allowed to originate and receive internal calls
-    denied access to TIE and Common Controlled Switching Arrangement networks
-    denied access to and from the exchange network, either by dialing, through an attendant, or using call modification from an unrestricted telephone

Call modification takes place when certain features are activated while a call is in progress (for example, Call Park, Call Pickup, Call Transfer, Conference, or Night Answer).



FR1

-    allowed to originate and receive internal calls
     Features and Services Book 1 of 3 (A to C) Page 154 of 1230 Access Restrictions
-    allowed access to TIE and CCSA networks
-    denied access to and from the exchange network, either by dialing through an attendant or by using call modification from an unrestricted telephone

Note: In a networking environment, incoming and outgoing calls can be extended, through call modification, to a telephone with CLS = FR1.
If a telephone with CLS = FR1 is in a Multiple Appearance DN (MADN) arrangement, the call may be presented if at least one of the telephones has CLS = UNR. Once the call is presented, it will ring all telephones in the MADN group. However, only UNR telephones can answer the call.

FRE

-    allowed to originate and receive internal calls
-    allowed access to TIE and CCSA networks
-    allowed access to and from the exchange network using call modification from an unrestricted telephone
-    denied access (either by dialing or through an attendant) to and from the exchange network

Note: The FRPT prompt in LD 17 allows or denies access to incoming calls for FRE CLS telephones. It allows FRE calls to Call Pickup, Night Answer, and to receive modified calls.

The assignment of Incoming Call Indicator (ICI) keys allows the attendant to recognize which calls are fully restricted:
-    DF0 = calls from FRE, FR1, and FR2 CLS, and
-    DL0 = calls from CUN, CTD, TLD, SRE, and UNR CLS.


Semi-Restricted Service (SRE)

-    allowed to receive calls from the exchange network
-    restricted from all dial access to the exchange network
-    allowed to access the exchange network through an attendant or an unrestricted telephone only


Toll Denied Service (TLD)

-    allowed to receive calls from the exchange network
-    allowed access to WATS trunks for toll calls using direct trunk access codes, unless New Flexible Code
      Restriction (NFCR) is programmed to deny certain digits
-    denied from calls on Central Office/Foreign Exchange (CO/FX) trunks where 0 or 1 is dialed as a first
      or   second digit following a direct trunk access code. Special numbers, such as 411, 611, and 911, are
      allowed by default unless restricted specifically by NFCR.
-    denied from toll calls on CO/FX trunks when BARS or NARS access codes are dialed, unless NFCR
      tables allow the call
-    allowed toll calls on WATS trunks using BARS or NARS access codes, unless NFCR tables deny digits
-    allowed access to the toll exchange network through an attendant or an unrestricted telephone
-    allowed toll calls and special number calls on TIE trunks, unless NFCR tables specifically deny certain
     digits. Direct trunk access to toll calls on TIE trunks is permitted, as well as BARS or NARS access.


Conditionally Toll Denied Service (CTD)

-    allowed to receive calls from the exchange network
-    allowed access to WATS trunks for toll calls using direct trunk access codes, unless New Flexible Code
      Restriction (NFCR) is programmed to deny certain digits
-    denied from calls on CO/FX trunks where 0 or 1 is dialed as a first or second digit following a direct
      trunk access code (special numbers excepted). New Flexible Code Restriction tables can be used to
      deny or allow certain calls on these routes.
-    allowed access to toll calls on CO/FX/WATS trunks placed using BARS or NARS or CDP access
      codes. NFCR tables, if programmed on the routes, are ignored for CTD users dialing Electronic
      Switched Network (ESN) access codes.
-    allowed toll calls and special number calls on TIE trunks, unless NFCR tables specifically deny certain
      digits. Direct trunk access is permitted as well as BARS or NARS access. NFCR tables deny calls for
      these users only if direct TIE trunk access codes are used.

Conditionally Unrestricted Service (CUN)

-    allowed access for calls placed through Automatic Number Identification (ANI) trunks
-    denied access for all other types of outgoing calls

Unrestricted Service (UNR)

-    allowed to originate and receive calls from the exchange network

Well, maybe I just had a memory of copying it from the books