Creating tandem private networks 527Programming Operations GuideNode A Node D User in Calgary dials a 761-xxxx number which is answered with DISA.Incoming interface: PublicDN type: PublicDestination: Local (DISA DN)User enters a COS password and a private DN for Node D, i.e. 6 + 394-xxxxDN type: PrivateNode A receives it and identifies it as being for C. Uses the private trunk to route the callto C.Incoming interface: (DISA user)Destination: Remote nodeNode C receives it and identifies it as being the responsibility of D. Uses private trunk toroute call to D.Incoming interface: PrivateDestination: Remote nodeNode D receives the call and identifies it as terminating locally. Uses target line to routecall. (Private received #)Incoming interface: PrivateDestination: Local (target line)Node A OttawaPSTNUser in Calgary dials a 761-xxxx number which is answered with DISA. User enters aCOS password and an Ottawa public network number.Incoming interface: PublicDN type: PublicDestination: Local (DISA DN)Node A receives it and identifies it as being for C. Uses the private trunk to route the callto C.Incoming interface: Local (DISA user)Destination: Remote PSTNNode C receives the call and identifies it as a public number and routes it out over thelocal PSTN.Incoming interface: PrivateDestination: Local PSTNTable 115 Call originating from the public network to a tandem network (Continued)Received Destination Description
