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RFC 4129 (rfc4129) - Digital Private Network Signaling System (DPNSS)/Digi (2434 words) |
 | DPNSS 1, specified in ND1301:2001/03 (formerly BTNR 188), is used to interconnect Private Branch Exchanges (PBX) in a private network. |
| DPNSS channel - Time slots 1 to 15 and 17 to 31 on a 2048 kbits/s interface or Time slots 1 to 23 on a 1544 kbits/s interface are termed as DPNSS channels. |
| DPNSS extends facilities that are normally only available between extensions on a single PBX to all extensions on PBXs that are connected in a private network. |
| PQM Consultants - Digital Private Network Signalling System (DPNSS) (221 words) |
| DPNSS was developed before ISDN was fully defined and before a basic QSIG definition was available, but its facilities were needed by private network customers who wished to make use of digital networks as soon as possible. |
| DPNSS is rich in standardised supplementary services and its information flows have been used as the basis of work on the QSIG protocols. |
| DPNSS is defined in four documents that are available to any manufacturer, and many manufacturers have taken the opportunity to develop interfaces that conform to this open standard. |
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