PC Programming Manual References3.14 [1-1] Slot—Card Property - Virtual IP Extension3.15 [1-1] Slot—Port Property - Virtual IP Extension3.16 [1-1] Slot—Port Property - Virtual IP Extension—Connection Command9.1.16 ISDN (INTEGRATED SERVICES DIGITAL NETWORK)FEATURESDescriptionIntegrated Services Digital Network (ISDN) is a digital switching and transmission network. ISDN transmitsvoice, data, and image in digital format. ISDN lines can be connected to public lines (CO lines), private lines(QSIG).1. ISDN Interface and ConfigurationInterface Type Description Port ModePrimary Rate Interface(PRI)Provides twenty-three 64 kbps B channels forcommunication and one 64 kbps D channel forsignaling (23B + D).CO Line, QSIG—Master, QSIG—Slave*1*1 3.31 [1-1] Slot—Port Property - PRI Port—Main— Port Type2. ISDN Supplementary Services for Public NetworkService Description Details inDirect Inward Dialing(DID)Directs a call with a DID number to thepreprogrammed destination.® 4.1.6 DID (DirectInward Dialing)Calling LineIdentificationPresentation (CLIP)Sends the caller’s telephone number to thenetwork when making a call. The called party cansee the number on his or her telephone displaybefore answering the call.® 3.1.15 CLIP(Calling LineIdentificationPresentation)Connected LineIdentificationPresentation (COLP)Sends the telephone number of the answeredparty to the network when answering a call. Thecaller can see the number on his telephonedisplay when the line is connected.Calling LineIdentificationRestriction (CLIR)Prevents the caller’s CLI from being presented tothe called party.Connected LineIdentificationRestriction (COLR)Prevents COLP from being sent by the answeredparty.Caller ID The PBX receives Caller ID information, such asthe caller’s name and telephone number, when acall is sent from the network. A display proprietarytelephone (PT) user can see this informationbefore answering the call.® 3.1.3 Caller ID3. Private Networking Connection (QSIG)Private networking with QSIG is possible using an ISDN line. Each ISDN port must be programmed so thateach ISDN line has a "master" connection and a "slave" connection.Document Version 2009-12 Feature Manual 1679.1.16 ISDN (INTEGRATED SERVICES DIGITAL NETWORK) FEATURES