Digital Private Network Signalling System
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The Digital Private Network Signalling System (DPNSS) is a network protocol used on digital trunk lines for connecting two PABX. It supports a defined set of inter-networking facilities.
DPNSS was originally defined by British Telecom. The specification for the protocol is defined in BTNR188. The specification currently comes under the Network Interoperability Consultative Committee.
[edit] See also
- DASS1 (obsolete)
- Digital Access Signaling System 2 (DASS2) (obsolescent)
- QSIG (the ISO equivalent of DPNSS, uses the Q.931 and ROSE protocols. It is widely used in the rest of Europe).
