4.1 TroubleshootingInstallation Manual 1394.1.2 ConnectionConnection between the Hybrid IP-PBX and a PT:Connection between the Hybrid IP-PBX and an SLT:Connection between the Hybrid IP-PBX and an SLT that is polarity-sensitive:CAUSEThe T/R is connected to the D1/D2.SOLUTIONUse the correct cord (theinner 2 wires are for T/R andthe outer 2 wires are forD1/D2).D1TRD2D1TRD2Hybrid IP-PBXHybrid IP-PBXHybrid IP-PBXExtensionCAUSEThe T/R is connected to the D1/D2.SOLUTIONUse the correct cord (theinner 2 wires are for T/R).•D1TRD2TRExtensionCAUSEThe "T" is connected to the "R".SOLUTIONReverse the connections ofthe T/R.D1TRD2TRExtensionCan you dialan extension?(Continued on the next page.)NoYesIf a telephone equippedwith an A-A1 relay isconnected to the HybridIP-PBX, set the A-A1relay switch of thetelephone to "OFF".
