Nortel Networks Water System BCM 1000 User Manual

Appendix G Market profile attributes

N0060603

N0060603

DPNSS

A digital private network signaling system, which allows phone systems from different 
manufacturers to be tied together over E1 lines, offering significant enhancements to BCM 
networking capabilities. 

DPNSS makes it easier to support centralized network functionality within private networks 
for operators and attendants dealing with large numbers of calls. Its routing capabilities 
provide more of the larger-network capabilities without the expense of installing a new 
system, reconfiguring all the nodes, and worrying about a lot of downtime. Most functionality 
over DPNSS lines is transparent once the DPNSS is programmed into the system. 

DPNSS allows a local node, acting as a terminating node, to communicate with other PBXs 
over the network using E1 lines. For example, corporate offices separated geographically 
can be linked over DPNSS lines to other BCM systems, bypassing the restrictions of the 
PSTNs to which they may be connected. This allows connected BCM systems to function 
like a private network.

Loop start

Standard PSTN telephone line.

Table 33   Analog and digital trunk types and descriptions (Sheet 2 of 2)