Paradyne Comsphere 3510 User Manual

Also see for Comsphere 3511: Installation manual Installation instructions Quick reference guide Notice

Contents

COMSPHERE 3500 Series Data Service Units4-24 July 1999 3510-A2-GN32-70Table 4-6(4 of 4)Model 3510 DSU S4 SelectionNetworkAddressSwitch S4 SelectionNetworkAddress 65432161 F F F F R F62 F F F F F R63 F F F F F R64 1 R R R R R RF = Front R = Rear1 FACTORY DEFAULT SETTING (Broadcast Address)DSU Strap SettingDescriptionsThe following information provides DSU strap settingdescriptions.S1-1 and S1-2: Timing – The DSU comes from thefactory with digital data system (DDS) timing selected.DDS timing is required when the DSU is connected to theDDS network. Three other types of timing (receive,internal and external) are available for LADS use.S1-3: Circuit Assurance – When enabled, the DSUdoes not turn on the DTE Clear-to-Send (CTS) interfacelead unless the CTS timing delay has expired and theDSU receiver is getting a data signal from the network(received line signal detector lead is on).When disabled, the CTS interface lead turns on inresponse to the Request-to-Send lead if there is a validdata or control signal from the network.NOTEIf the DTE Request-to-Send(RTS) interface lead is ON, andthe DSU is not receiving a datasignal from the network, the DSUsends a continuous MARK signalto the network.S1-4: DSR Normal during Local Loopback – DSRON during Local Loopback. When enabled, this strapforces the DSR lead ON during a Local Loopback. Thisallows DTEs that rely on DSR being on to send testmessages to the DSU.When disabled, DSR is turned Off during a LocalLoopback.S1-5: Elastic Store – When enabled, the DSUcompensates for small (3 bits) timing phase drifts thatmay occur when the DTE interface of the DSU isconnected to the DTE interface of an analog modem toprovide an extended network. If you do not have anextended network, place the strap in the disable position.S1-6: Remote Digital Loopback Enable – Whenenabled, the DSU responds to a front panel-initiatedRemote Loopback request from a remote DSU. Whendisabled, the DSU ignores the Remote Loopback request.NOTEFor nondiagnostic data over amultipoint network, set this strapon only one tributary DSU.