4. Configuration Options4-42 September 2002 9128-A2-GB20-80Action on Network Yellow AlarmPossible Settings: None, HaltDefault Setting: HaltSpecifies the action to take on the synchronous data port when a yellow alarm is receivedon the network interface. (A yellow alarm indicates a problem with the signal beingtransmitted to the network.)Display Conditions – This option only appears for Port-2 on a FrameSaver SLV 9128-II,when Port Use is set to Synchronous Data.None – No action taken when a yellow alarm is received.Halt – Halts the transmission of data received on the synchronous data port and all onesare sent on circuit BB (ITU 104) – Receive Data (RD) and circuit CB (ITU 106) –Clear-to-Send (CTS) is deasserted to the port when a yellow alarm is received.Network Initiated Data Channel LoopbackPossible Settings: Disable, V.54, ANSI_FT1, V.54_&_ANSIDefault Setting: DisableAllows the initiation and termination of the Data Channel Loopback (V.54 Loop 2) to becontrolled by the receipt of a DCLB-actuate and DCLB-release sequence (either V.54, orFT1 [ANSI] compliant sequences) from the network or far end unit. When thisconfiguration is enabled (V.54, FT1, or Both), receiving a DCLB-actuate sequence on aparticular port causes the unit to initiate a DCLB on that port (provided that a DCLB canbe performed based on the current state of the port and unit). Receiving a DCLB-releasesequence terminates the DCLB.Display Conditions – This option only appears for Port-2 on a FrameSaver SLV 9128-II,when Port Use is set to Synchronous Data.Disable – Ignores the DCLB-actuate and DCLB-release for the port.V.54 – DCLB-actuate and DCLB-release sequences that comply with the V.54 standardfor “inter-DCE signaling for point-to-point circuits” are recognized and will control theinitiation and termination of a DCLB (V.54 Loop 2) for the port.ANSI_FT1 – DCLB-actuate and DCLB-release sequences that comply with either theANSI.403, Annex B standard for “in-band signaling for fractional T1 (FT1) channelloopbacks” are recognized and will control the initiation and termination of a DCLB for theport.V.54_&_ANSI – DCLB-actuate and DCLB-release sequences that comply with either theANSI or V.54 standard are recognized and will control the initiation and termination of aDCLB for the port.Table 4-7. Data Port Physical Interface Options (5 of 5)
