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| 1. | 
Model # 106857543 | | Music-on-hold adapter/coupler used with System 75, System 85 and Definity telephone systems. Connects to trunk port on system to provide music-on-hold input....Read More
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$101.97
|  Detail Box
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| 2. |
Model # 63118 | | Provides 4 trunk-type interfaces between the DEFINITY, System 75, System 25 and on-premises auxiliary equipment such as paging, dial dictation or music-on-hold. Supports one Auxiliary Trunk Interface (PE...Read More
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$139.97
| Detail Box
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| 3. |
Model # CSU120A2 | | Channel Service Unit (CSU) module used with TN2464.
Product is also known as Model # 63185 Read More
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$499.97
| Detail Box
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| 4. |
Model # KS23395L4 | | Music-on-hold adapter/coupler used with System 75, System 85 and Definity telephone systems. Connects to trunk port on system to provide music-on-hold input. Read More
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$69.97
| Detail Box |  Product Brochure (pdf)
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| 5. |
Model # TN2224 | | Provides interface to 24 - 2 wire 6400 or 8400 series digital telephone stations....Read More
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$227.97
| Detail Box
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| 6. | 
Model # TN2312AP | | Server Interface (IPSI) provides the S8700 Media Servers with tone generation, tone detection, call classification equivalent to a TN2182C, and clock generation....Read More
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$289.97
| Detail Box
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| 7. | 
Model # TN2312BP | | The TN2312BP IP server interface (IPSI) provides transport of control messages. The messages are sent between the S8500, S8700, or S8710 Media Server to the media server’s port networks (PNs) using th...Read More
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$1,917.97
| Detail Box
In Stock |
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| 8. | 
Model # TN2793B | | The TN2793B installs in Category B only. It is a dual coded, analog line 24-port, that performs all the functions of the TN746B, 16-port analog line circuit pack. Each port supports 1 telephone, such a...Read More
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$999.97
| Detail Box
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| 9. |
Model # TN464D | | Provides 24 channels for T1, DS1 or ISDN interface to digital facilities (not compatible with ICSU). Read More
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$234.38
| Detail Box
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| 10. |
Model # TN464F | | Primary Rate Interface card for Definity system G3 only....Read More
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$119.97
ON SALE NOW!
| Detail Box
Regular Price: $159.97
You Save: $40.00 (25%)
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| 11. | 
Model # TN464GP | | Primary Rate Interface card for Definity system G3 only....Read More
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$264.47
| Detail Box
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| 12. | 
Model # TN464HP | | Primary Rate Interface card for Definity system G3 only....Read More
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$1,365.47
| Detail Box
In Stock |
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| 13. | 
Model # TN747 | | A circuit pack that interfaces with 8 CO Trunks. Read More
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$129.97
| Detail Box
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| 14. | 
Model # TN790B | | A circuit pack designed to handle errors that are associated with circuit packs in R7....Read More
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Click here to contact Sales for pricing! | Detail Box
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| 15. | 
Model # TN792 | | A duplication interface for high and critical reliability R7 or later systems....Read More
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$164.97
| Detail Box
In Stock |
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| 16. |
Model # TN793 | | Provides interface to 24 - 2 wire standard analog telephones or other devices....Read More
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$429.97
| Detail Box
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| 17. |
Model # TN793CP | | 24-Analog circuit pack supports 24 analog telephones and devices....Read More
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$1,396.85
| Detail Box
In Stock |
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| 18. |
Model # TN794 | | A network control/packet interface used in G3si....Read More
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$299.97
ON SALE NOW!
| Detail Box
Regular Price: $399.97
You Save: $100.00 (25%)
In Stock |
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| 19. | 
Model # TN799 | | Provides interface to ethernet network. Read More
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$356.25
| Detail Box
In Stock |
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