Telephone Equipment and Service

The Base Cabinet reserves two slots specifically for the system common control unit, labeled “R11” and “RCTU.” The Base Cabinet also has six universal slots, labeled “S11 ~ S16,” which can accommodate any station, line or option PCB

The Expansion Cabinets have eight universal slots, “S_1” ~ “S_8.” Each of the universal slots can interface with station, line, or option PCBs. Slots “S_1” ~ “S_6” are available with the RCTUA, RCTUBA/BB, or RCTUC/D. Slots “S_7” and “S_8” are only available with the RCTUE/F processor.. The number of expansion cabinets varies according to processor capacity

Supports Base Cabinet only

Supports Base Cabinet and 1 Expansion Cabinet.

Supports up to 6 Cabinets.

Supports up to 7 Cabinets

4 Circuit.

The RRCS translates DTMF tones from DID/Tie/ANI/DNIS/DISA lines, built-in AA, DTMF standard telephones, and other peripheral devices to data signals for the system.

The RRCS can be attached to the common control unit.

8 Circuit.

The RRCS translates DTMF tones from DID/Tie/ANI/DNIS/DISA lines, built-inAA, DTMF standard telephones, and other peripheral devices to data signals for the system.

The RRCS can be attached to the common control unit.

12 Circuit.

The RRCS translates DTMF tones from DID/Tie/ANI/DNIS/DISA lines, built-in AA, DTMF standard telephones, and other peripheral devices to data signals for the system.

The RRCS can be attached to the common control unit.

The system can be upgraded for built-in AA, Automatic Call Distribution (ACD), Software Management Information System (SMIS) for ACD, and for Insight DK with the following feature keys that attach to the common control unit.

The RATU can support four attendant consoles. Multiple consoles enable automatic load-sharing on a rotation basis from a central call queue, increasing call handling efficiency. The RATU PCB in the Strata DK424 system cabinet connects to the PC Attendant Console Interface (RATI) via two pair of wires.

RATU is only available for systems operating with RCTUBA/BB, RCTUC/D or RCTUE/F common control units. One RATU is available per system to support a maximum of four Attendant Consoles per system with RCTUC/D or RCTUE/F, two with RCTUBA/BB, (any combination of PC or conventional consoles).

The RDTU provides either 8, 16 or 24 digital voice channels that can be individually configured for ground start CO line operation, loop start CO line operation, DID/DOD line operation (with hookflash) or Tie line operation. The number and type of channels for each RDTU installed is assigned in system programming. All RDTU line types are two-way and can be used for incoming and outgoing calls. Any RDTU, DID/DOD, or Tie channel can be configured in system programming to receive DNIS and/or ANI information available for systems operating with a RCTUBA/BB, RCTUC/D or RCTUE/F common control unit. The RDTU normally requires the installation of a Channel Service Unit, which is not supplied by Toshiba. RDTU T1/DS-1 digital voice channels can be configured for SF or ESF format and either AMI or B8ZS line coding (see Table 23). The new RDTU2, installed in a DK424 Release 4.0 system, supports the hook flash capability. “SuperTrunk” requires hook flash operation on T1 two-way DID/DOD lines. The RDTU1 can be upgraded to support hook flash. In most locations within the U.S., network connection using RDTU2 requires a dealer-supplied, UL-listed external CSU or in Canada, a CSA-certified CSU.

The Primary Rate Interface Unit is a 24-channel PRI card, which provides 1 data (control) channel and 23 bearer channels (available in Release 4.0). All B channels appear and program as CO lines in the DK424 system and can be individually configured for local service, FX, WATS, DID, Tie, etc., service operation. Network connection using the RPTU requires a dealer-supplied, UL-listed, external CSU in most locations in the U.S. In Canada, the CSU/DSU must be CSA certified. The RPTU is supported by the RCTUBA3/BB4, RCTUC3/D4 and RCTUE3/F4.

The Basic Rate Interface Unit provides two Basic Rate Interface (BRI) “U” circuits. Each circuit provides two simultaneous voice and/or data connections with a single interface. BRI uses the 2B+D transmission format which is defined as two 64-kbps bearer channels and one 16-kbps data (control) channel. Note RBUU/RBUS will be available with Release 4.2.

The RMCU/RMCS PCBs provide up to four CAMA trunk circuits. The RMCU/RMCS eliminates the need for connection of adjunct terminal adapter equipment to E911 CAMA trunks. Available for DK424 in Release 4.0. Also, see note below RCMS.

One RCMS subassembly attaches to the RMCU to provide two CAMA trunk circuits. A second RCMS can be added to provide four CAMA trunk circuits. Available in a future release. Note The RCMS is ordered separately from the RMCU, but it must be installed on the RMCU to provide CAMA trunk interface.

The RSIU provides up to four interface ports that allow the Strata DK424 system to connect to the following:
© Voice Mail system with RS-232 SMDI
© ACD/SMIS system or Call Center Viewer
© SMDR printer or call accounting machine
© DKAdmin/DKBackup running on a PC as a maintenance terminal (locally or remotely) The RSIU, which comes standard with one port, can beequipped with up to three more optional RS-232 ports (total of four RS-232 ports). The Single Interface Subassembly (RSIS) piggy-backs onto the RSIU PCB to provide the optional ports. One of the serial ports can be an internal modem. An optional 2400 bps built-in Modem Subassembly (RMDS) can be added onto the RSIU. The maximum allowed combined speed of all four channels is 9600 bps. All four channels of the RSIU connect directly to the RCTU processor via a short ribbon cable. The RSIU must be positioned in the first universal slot of the Base Cabinet.

The optional RMDS modem mounts on an RSIU and can function either as a remote maintenance modem to provide the same functions as the IMDU or as a direct RS-232 link to a DKAdmin/ DKBackup PC COM port. The function of the RMDS is set in system programming. Data transmission speed for the built-in modem function can be set at 1200 bps or 2400 bps via system programming.