3Com MSR 30, MSR 50 - page 579

579
reserved. The following table lists the possible number types and code schemes.
For more information, see the related protocol reference manual.
Table100 Types and code schemes of ISDN numbers
Protocol Field (Bit) value Definition
Type Code scheme
8 7 6 5 4 3 2 1
Type Code scheme
8 7 6 5 4 3 2 1
ANSI 0 0 0 User-specified
0 1 0 National network identification
0 1 1 International network identification
0 0 0 0 Unknown/user-specified
0 0 0 1 Carrier identification code
0 0 1 1 Data network identification code (ITU-T
Recommendation X.121)
AT&T 0 0 0 Unknown
0 0 1 International number
0 1 0 National number
1 0 0 Subscriber number
0 0 0 0 Unknown
0 0 0 1 ISDN/telephony numbering loan
(Recommendation E.164/E.163)
1 0 0 1 Private numbering plan
DSS1 0 0 0 Unknown
0 0 1 International number
0 1 0 National number
0 1 1 Network specific number
1 0 0 Subscriber number
1 1 0 Abbreviated number
1 1 1 Reserved for extension
0 0 0 0 Unknown
0 0 0 1 ISDN/telephony numbering plan
(Recommendation E.164)
0 0 1 1 Data numbering plan (Recommendation
X.121)
0 1 0 0 Telex numbering plan (Recommendation
F.69)
1 0 0 0 National standard numbering plan
1 0 0 1 Private numbering plan
1 1 1 1 Reserved for extension
ETSI 0 0 0 Unknown
0 0 1 International number
0 1 0 National number
0 1 1 Network specific number
1 0 0 Subscriber number