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| 1. |  Model # DKSUB424 | | 1 per system. Requires either RCTUA, RCTUBA/BB, RCTUC/D, or RCTUE/F. Read More
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$130.97 ON SALE NOW!
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Regular Price: $180.99
You Save: $50.02 (28%)
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| 2. |  Model # DKSUE424 | | Maximum 1 per RCTUB system.1 to 5 per RCTUC/D system.1 to 6 per RCTUE/F system. Read More
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$325.99 ON SALE NOW!
| Detail Box
Regular Price: $525.99
You Save: $200.00 (38%)
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| 3. |  Model # RCTUA | | 1 common control unit per system. Does not support Expansion Cabinets or advanced features of T1, Attendant Consoles, SMDI, or ACD/MIS. (Release 1, 2, 3 or 4) Read More
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$149.97 ON SALE NOW!
| Detail Box
Regular Price: $199.99
You Save: $50.02 (25%)
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| 4. |  Model # RCTUBB | | 1 per RCTUBA required. (Release 4) Read More
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$445.95 ON SALE NOW!
| Detail Box
Regular Price: $795.95
You Save: $350.00 (44%)
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| 5. |  Model # RCTUBA | | 1 per system. Supports Base Cabinet, 1 Expansion Cabinet, and advanced DK424 features. Requires RCTUBB. (Release 4) Read More
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$623.50 ON SALE NOW!
| Detail Box
Mfg. List Price: $790.95
Regular Price: $773.50
You Save: $167.45 (21%)
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| 6. |  Model # RCTUC | | 1 per system. Supports Base Cabinet and 1 to 5 Expansion Cabinets and advanced features. Requires RCTUD. (Release 4) Read More
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$1,575.00
| Detail Box
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| 7. |  Model # RCTUD | | 1 per RCTUC required. Also requires simultaneous purchase of RSIU and RMDS, or PIOU/PIOUS and IMDU. (Release 4) Read More
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$1,655.00
| Detail Box
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| 8. |  Model # RCTUE | | 1 per system. Supports base cabinet, 1 to 6 expansion cabinets, and advanced DK424 features. Requires RCTUF. (Release 4) Read More
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$2,800.00
| Detail Box
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| 9. |  Model # RCTUF | | 1 per RCTUE required. Also requires simultaneous purchase of RSIU and RMDS, or PIOU/PIOUS and IMDU. (Release 4) Read More
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$3,900.00
| Detail Box
Mfg. List Price: $4,900.00
You Save: $1,000.00 (20%)
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| 10. |  Model # PDKU2 | | Provides 8 digital station ports. A DSS Console, DDCB, or PDIU-DS uses 1 port....Read More
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$39.97 ON SALE NOW!
| Detail Box
Regular Price: $99.99
You Save: $60.02 (60%)
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| 11. |  Model # PEKU | | Provides 8 electronic station ports....Read More
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$45.97 ON SALE NOW!
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Regular Price: $67.99
You Save: $22.02 (32%)
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| 12. |  Model # RCOS | | One per RCOU. The RCOS attaches to the RCOU to provide 4 additional Loop Start CO / PBX / Centrex line circuits. Read More
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$59.99 ON SALE NOW!
| Detail Box
Regular Price: $149.99
You Save: $90.00 (60%)
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| 13. |  Model # RRCS-4 | | One per RCTU for connection of DTMF standard telephones, Direct Inward System Access lines, DTMF DID lines, TIE lines, voice mail devices, or built-in Auto Attendant. Mounts on RCTU unit. Refurbished Only. Read More
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$60.80
| Detail Box
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| 14. |  Model # RCOU | | Provides 4 CO/PBX/Centrex loop start lines. Maximum 1 RCOU per DK40 system. 1 for each 4 Loop Start CO / PBX / Centrex lines on DK280/DK424 systems. Accepts RCOS. Read More
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$62.99 ON SALE NOW!
| Detail Box
Regular Price: $212.99
You Save: $150.00 (70%)
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| 15. |  Model # RSTU2 | | Provides 8 standard telephone station ports. 1 port per DTMF or rotary telephone, or peripheral device such as Voice Mail, Auto Attendant, fax, etc. 1 port per off-premises station, type OL13B line. Maximu...Read More
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$96.18
| Detail Box
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| 16. |  Model # RRCS-8 | | One per RCTU for connection of DTMF standard telephones, Direct Inward System Access lines, DTMF DID lines, TIE lines, voice mail devices, or built-in Auto Attendant. Mounts on RCTU unit. Refurbished Only. Read More
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$149.99 ON SALE NOW!
| Detail Box
Regular Price: $399.99
You Save: $250.00 (63%)
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| 17. |  Model # RURB | | Use 1 kit to upgrade RCTUBA/BB3 to Release 4.0 software. Read More
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$199.97
| Detail Box
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| 18. |  Model # RURA | | Use 1 kit to upgrade RCTUA3A to Release 4.0 software. Read More
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$295.00
| Detail Box
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| 19. |  Model # RURD | | Use 1 kit to upgrade RCTUC3/D3 to Release 4.0 software. Read More
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$495.00
| Detail Box
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| 20. |  Model # RSTU3A | | Provides 8 standard telephone station ports. 1 port per DTMF or rotary telephone, or peripheral device such as Voice Mail, Auto Attendant, fax, etc. 1 port per off-premises station, type OL13B line. Maximu...Read More
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$519.97
| Detail Box
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