Chapter 6. Configuration61200051L1-1D ISU 2x64 Dual Port ISDN Service Unit User Manual 51Bit RateThe Bit Rate can be set asynchronously for 300, 1200, 2400, 4800,9600, 19200, 38400, 57600, and 115200 bps.The Bit Rate can be set synchronously for 2400, 4800, 9600, 19200,38400, 48000, 56000, 64000, 112000, and 128000 bps.Connector TypeThe ISU 2x64 can provide either an EIA-232, RS-530, or V.35 inter-face to a user DTE by selecting the desired connector type. TheV.35 interface requires the RS-530/232-to-V.35 adapter, part num-ber 1200072L1.RTS Options1 ms delay causes the Clear to Send signal to change state onemillisecond after the DTE Request to Send signal changes state.The 18 ms delay causes the Clear to Send signal to change state18 milliseconds after the DTE Request to Send signal changesstate.CTS OptionsForced CTS causes the CTS signal on the DTE connector to becontinually asserted. Follows RTS causes the CTS signal to fol-low the state of the RTS lead.CD OptionsCD Forced On causes the carrier detect (CD) signal to always beasserted. Normal causes the CD signal to be asserted when a callhas been successfully established. Off with LOCD (local discon-nect) causes the CD signal to be disasserted for a period of 5 sec-onds and then be reasserted at the termination of a call. Off LinkDown causes the CD signal to be disasserted when the ISDNinterface is not ready.
