All publications in this category
| ND Number | Version | Title | File (size) | Status | Comment |
|---|---|---|---|---|---|
| ND1301 | Issue 7 | Digital Private Signalling System No.1 | (5,538kb) | Current | |
| ND1302 | Issue 4 | Interworking Between DPNSS1 and Other Signalling Systems | (1,079kb) | Current | |
| ND1303 | Issue 2 | Interworking Between DPNSS1 and ISDN Signalling Systems | (339kb) | Current |