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| 1. | 
Model # RRCS-12 | | 1 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. Read More
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$119.99
ON SALE NOW!
|  Detail Box
Regular Price: $469.99
You Save: $350.00 (74%)
In Stock |
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| 2. | 
Model # RMDS | | 1 per system to provide a 1200/2400 BPS modem. Mounts piggy-back onto the RSIU. Read More
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$75.97
ON SALE NOW!
| Detail Box
Regular Price: $115.97
You Save: $40.00 (34%)
In Stock |
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| 3. |
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
In Stock |
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| 4. | 
Model # RCOU3 | | 4 Circuit loop start CO line interface unit that supports 4 CO lines for the CTX100 and CTX670 telephone systems. An RCOS3 subassembly can be added to the RCOU3 card, adding support for 4 more CO lines. Read More
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$232.97
| Detail Box
In Stock |
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| 5. | 
Model # R48S | | One per RSTU or RDSU. Required for use of OL13C OPS lines (instead of OL13B). For DK40I/DK424/DK424I/CTX100/CTX670. Read More
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$59.97
| Detail Box
In Stock |
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| 6. |
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%)
In Stock |
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| 7. |
Model # RKYS2 | | 1 per system for use of ACD option without MIS. Also includes Auto Attendant. Requires RCTUB, RCTUC/D, or RCTUE/F. Read More
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$169.97
| Detail Box
In Stock |
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| 8. |
Model # RKYS3 | | 1 per system for use of MiS option. Also includes ACD and Auto Attendant. Requires RCTUB, RCTUC/D, or RCTUE/F. Requires PIOU, PIOUS, RSSU, or RSiU for interface. Same charge as RKYS2 if purchased wit...Read More
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$209.97
ON SALE NOW!
| Detail Box
Regular Price: $329.97
You Save: $120.00 (36%)
In Stock |
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| 9. | 
Model # RATU | | One per 4 attendant consoles. Interfaces with up to four conventional and/or PC attendant consoles. Read More
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$44.97
ON SALE NOW!
| Detail Box
Regular Price: $74.99
You Save: $30.02 (40%)
In Stock |
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| 10. |
Model # RKYS1 | | One per system for use of Auto Attendant option. Attaches to RCTU. Requires RRCS, external digital announcer(s), and standard port(s) Read More
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$139.97
ON SALE NOW!
| Detail Box
Regular Price: $159.97
You Save: $20.00 (13%)
In Stock |
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| 11. |
Model # RBDB2 | | 1 per system required when 3 to 7 cabinets are connected to reserve batteries. Includes 6 Power Supply to RBDB2 cables (5-ft.). Read More
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$320.00
| Detail Box
In Stock |
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| 12. |
Model # RCIS1 | | 1 per RCIU. The RCIS installs piggy-back onto the RCIU to provide an additional 4 Caller ID circuits, totaling 8 per slot. CO lines are looped through the RCIS and into the RCOS. Read More
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$129.97
| Detail Box
In Stock |
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| 13. |
Model # RCCB2 | | Required for AC and battery connection when 3 to 7 cabinets are floor mounted. Not required for wall mounting. Read More
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$300.00
| Detail Box
In Stock |
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| 14. | 
Model # PPTC-9 | | Required to connect a 6-pin PC COM port to the RS-232, SMDR or TTY maintenance port on the WSIU, TSIU, BSIS, RSSU, RSIU, RSIS, PIOU or PIOUS. Requires a 6-wire modular cord. Read More
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$29.97
ON SALE NOW!
| Detail Box
Regular Price: $69.97
You Save: $40.00 (57%)
In Stock |
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| 15. | 
Model # PPTC | | Required to connect a device to the RS-232, SMDR or TTY maintenance port on the WSIU, TSIU, BSIS, RSSU, RSIU, RSIS, PIOU or PIOUS. Requires a 6-wire modular cord. Read More
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$45.97
ON SALE NOW!
| Detail Box
Regular Price: $65.97
You Save: $20.00 (30%)
In Stock |
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| 16. | 
Model # DDCB | | One for each of 3 door phone stations. Each DDCB requires 1 digital station port. Only 1 DDCB's can be connected per PDKU. Maximum 3 may installed in a DK280 or DK424 system. Maximum 2 DDCB's may be installe...Read More
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$143.97
| Detail Box
In Stock |
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| 17. | 
Model # PDKU2 | | PDKU 2 Provides 8 digital station ports. A DSS Console, DDCB, or PDIU-DS uses 1 port....Read More
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$69.97
ON SALE NOW!
| Detail Box
Regular Price: $99.99
You Save: $30.02 (30%)
In Stock |
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| 18. | 
Model # RDSU | | 1 per 4 digital station ports plus 2 standard station ports. Mounts in Expansion KSU. Maximum 2 RDSU per DK40 system. For DK40I/DK424/DK424I/CTX100/CTX670. Read More
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$86.97
| Detail Box
In Stock |
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| 19. | 
Model # RDDU1 | | Provides 4 DID line circuits. Mounts in the Expansion KSU. Maximum 1 RDDU per DK40 system. 1 for each 4 DID lines on DK280/DK424/DK424i system. K4RCU3 required for DTMF operation on DK40 systems. RRC...Read More
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$119.97
ON SALE NOW!
| Detail Box
Mfg. List Price: $490.00
Regular Price: $199.97
You Save: $370.03 (76%)
In Stock |
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| 20. |
Model # MDFB | | As desired, maximum 12 per digital system or 6 per electronic system. Maximum 3 per HDCB or DDCB. Read More
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$79.97
ON SALE NOW!
| Detail Box
Regular Price: $85.46
You Save: $5.49 (6%)
In Stock |
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