Section 700 - Operation Chapter 7. SLT Features576-50-700 DBS 576HD (USA) issued September 2001 3-21Considerations• A DSU is required (not available from Panasonic).CO Trunk Interface - ISDN-PRIThe System supports ISDN-PRI with the VB-44540 ISDN PRI Interface unit. The VB-44540 is a T/S-Point ISDN-PRI that supports 23 B (bearer) channels and 1 D (data) channel (23B + D; 1544kbps).This unit connects to an ISDN DSU.A maximum of 1 ISDN-PRI unit may be installed ina DBS 576HD system with CPC-HS. Up to 2ISDN-PRI units may be installed in a DBS 576HD system with CPC-HM.Hardware Requirements• N/ARelated Programming• N/AConsiderations• N/ACO Trunk Interface - Loop StartThe VB-44510 Loop Start interface unit supplies 8 loop start analog trunks circuits. In addition, theVB-44511 Loop Start/Ground Start interface unit may alternatively be used to connect to loop starttrunks.Hardware Requirements• VB-44510 Loop Start CardRelated Programming• N/AConsiderations• N/AComputer Telephony Integration CapabilityDescriptionComputer Telephony Integration (CTI) coordinates communications between computers and thetelephone system. This is accomplished by using a Telephony Application Programming Interface(TAPI) server to connect the DBS 576 with a Local Area Network.LAN TAPI is designed to enhance the DBS 576’s performance by supporting both standard andcustom computer telephony applications. A TAPI Service Provider (TSP) resides on a host computerrunning Windows NT Server/Version 4.0 or greater. Beginning with Version 3.0 and higher, CTAPIhas been added to support LAN TAPI. (See LAN TAPI on p. 3-36 for additional information.)
