Chapter 2 System telephony networking overview 53Networking Configuration GuideDPNSS 1 capabilitiesA single BCM node, acting as a terminating node on the network, supports the followingcapabilities over DPNSS 1 lines:• Direct Dial Inward (DDI) for incoming calls.• Originating Line Identification (OLI) for incoming and outgoing calls:— For incoming calls, the Calling Line Identification (CLI/CLID) information is displayed tothe user on telephones with line display. This must be configured in programming.— For outgoing calls, the directory number of the originating party is sent out as OLI.• Terminal Line Identification (TLI) for incoming and outgoing calls. Referred to as Called LineIdentification.• Selective Line Redirect (SLR) and External Call Forward (ECF) implemented on callsbetween DPNSS 1, and BRI/PRI, DASS2, and analog lines.• These remote access features are supported on DPNSS: DDI, line pool access code,destination codes and remote page feature codes.Keycodes are required to enable DPNSS 1.DPNSS to Embark connectionsDPNSS lines connected to an Embark switch perform call redirection/diversion using the CallForward feature to create a tandem link back to the switch. Since this is different from otherswitches, you must select the type of switch DPNSS will be connecting to when you do moduleprogramming.Before you program Call Forwarding, ensure that:• Both real channels and virtual channels are provisioned.• Destination or line pool codes are programmed for the DPNSS to Embark link.Also, during programming for Call Forward No Answer and Call Forward on Busy, when youenter the Forward to: digits, the system does a validation check with the switch on the number.(Configuration > Telephony > Sets > Active Sets > Line Access)DPNSS 1 featuresThe following features are available and can be programmed over DPNSS lines:• “Three party service” on page 54• Diversion (“Using the diversion feature” on page 55)• Redirection (“Using the Redirection feature” on page 56)• “Executive intrusion” on page 57
