SamsungDCS-408 & 408i Keyphone System Installation Manual– 29 –Voice Mail/AutoAttendantThe pin connections from the CTM to the PC are as follows.CTM PCCOM1 COM29-PIN 25-PINTXD(2) ----------------------------------------------- RXD(2) RXD(3)RXD(3) ----------------------------------------------- TXD(3) TXD(2)GND(5) ----------------------------------------------- GND(5) GND(7)Voice Mail/Auto AttendantIf you connect a voice mail system or automated attendant to a corresponding circuit of thekeyphone system, the common bell can receive a call signal as if it is one of the stations.Set a port in MMC 207, Assign VM/AA Port, and set the necessary parameters in MMC 726,VM/AA Options. You should connect voice mail/auto attendant to the SLI4 port only.The following table shows the arrangement of pins for the modular jack when connectingvoice mail/auto attendant.SLI4 Port(RJ-45 [4-pin] Modular Jack)Pin number Features1, 4 Not Used2, 3 SLI4NOTE: Always connect the voice mail/auto attendant to the SLI4 port. Connecting the voicemail/auto attendant to an SLI1–SLI3 port may cause critical errors.Doorphone and Door Lock ReleaseConnect a Doorphone Interface Module (DPIM) to a doorphone using a pair of #24 AWG or#26 AWG cables. Then, connect the DPIM to a DLI port of your choice using a pair of #24AWG or #26 AWG cables.Refer to the section Installing Cables in Chapter 2 for details of the connection between theDPIM and the DLI port.If you want to use the automatic door lock release, connect the LOCK port on the DPIM tothe door lock release.NOTE: Use only a Samsung 4-line keyset doorphone for this feature, which you can purchaseseparately.The following table and diagram show the arrangement of pins for the modular jack whenconnecting a doorphone and door lock release to the DPIM.