Nortel BCM DDIM - T1/PRI w/ CSU/DSU (NT5B52AAAA)
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Item Information
The digital drop and insert MUX media bay module (DDIM) enables a BCM system to share its connection to a universal T1 network with a local area network (LAN) to provide a combination of voice and data channels.
Features
- Provides the functionality of a DTM (T1 digital lines only)
- Splits the incoming T1 line so that some of the lines are used for voice traffic and some of the lines are used for data traffic
- Provides either the channel service unit (CSU) or data service unit (DSU) functionality to support connections to data terminal equipment (DTE), such as a router or a bridge
- Connects to network devices that support V.35 interfaces
- Provides end-to-end transparent bit service
- Supports loopbacks between the BCM system and the internal BCM components, and between the BCM system and digital terminal equipment
Compatibility
- Nortel BCM 200/400 Main Unit
- Nortel BCM 400 Expansion Unit
- Nortel BCM 450 Main Unit
- Nortel BCM 450 Expansion Unit
- Nortel BCM 50 Expansion Unit

Refurbished
| Functionality | |
|---|---|
| Cosmetics |
All refurbished items are restored to full functionality, and their grades reflect only cosmetic condition. Lower-grade products may have more visible blemishes but are rigorously tested and cleaned to ensure identical performance and warranty coverage.
UPC: 00033587536433
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- 30 days from invoice date
- Return in original condition, securely packed
Fast Shipping
- Ships within 2 business days*
- Rush & Saturday delivery available — call us
- Free ground shipping available (continental US orders over $500)
- Overnight delivery available
1-Year Warranty
- Covers defects & functional failures
- Normal business use, from date of purchase
- Batteries: 90 days (consumable)
- Excludes misuse, modification, mishandling
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