The home of network interoperability standards
Service descriptions (ND1201-1299)
All publications in this category
| ND Number | Version | Title | File (size) | Status | Comment |
| ND1201 | Issue 1 | Completion of Calls to Busy Subscriber (CCBS) Supplementary Service | 
(163 k) |
Current | |
| ND1202 | issue 1 | Calling Line Identification Restriction (CLIR) |
(62 k) |
Current | |
| ND1203 | V1.2.1 | Geographic Number Portability |
(130 k) |
Current | |
| ND1204 | Issue 1 | Call Forwarding on Subscriber Not Reachable Supplementary Service |
(67 k) |
Current | |
| ND1206 | Issue 2 | High Level Service Description For Targeted Transit |
(118 k) |
Current | |
| ND1207 | V1.2.1 | Non-Geographic Number Portability |
(147 k) |
Current | |
| ND1208 | V1.5.1 | Mobile Number Portability |
(370 k) |
Current | |
| ND1209 | Issue 1 | Operator Services |
(21 k) |
Current | |
| ND1210 | Issue 1 | Public Network Features To Support A Messaging Service |
(26 k) |
Current | |
| ND1212 | Issue 1 | Textphone Messaging Service Description |
(82 k) |
Current |
