ADTRAN
1202156L2 Adtran TDU 120e T1/Fractional T1 CSU/DSU with Embedded SNMP
Mfg Part Number: 1202156L2 , Item #: 22521
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Price: $300.05
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In Stock: 1
Last Updated: Jul 11, 2025
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The TDU 120e (T1 Distribution Unit) is an intelligent, full-featured, NEBS compliant, T1 DSU/CSU in a 1U high 19-inch rack mount enclosure. Designed to interface customers data terminal equipment (DTE) to T1 or fractional T1 services, the TDU 120e is fully compatible with D4 or ESF framing formats with AMI or B8ZS coding. When in ESF framing mode, the unit satisfies ANSI T1.403 and AT&T 54016 modes for utilization of the facility data link (FDL). It uses option modules identical to those used with ADTRAN TSU units. The TDU 120e also provides complete monitoring and control of the T1 network with embedded simple network management protocol provided through both a SLIP and a 10BaseT ethernet interface.
Main Specification
| General Information | |
| Manufacturer | Adtran |
| Manufacturer Part Number | 1202156L2 |
| Manufacturer Website Address | http://www.adtran.com |
| Brand Name | Adtran |
| Product Model | TDU 120e |
| Product Name | TDU 120e T1/Fractional T1 CSU/DSU with Embedded SNMP |
| Product Type | CSU/DSU |
| Technical Information | |
| Encoding Method | AMI/B8ZS |
| Interfaces/Ports | |
| Serial V.35 Interface | Yes |
| Network (RJ-45) | Yes |
| Serial Port | Yes |
| Number of Network (RJ-45) Ports | 1 |
| Media & Performance | |
| Ethernet Technology | Ethernet |
| Network Standard | 10Base-T |
| Physical Characteristics | |
| Form Factor | Rack-mountable |
| Compatible Rack Unit | 1U |
| Height | 1.7" |
| Width | 17" |
| Depth | 11.6" |
| Weight (Approximate) | 7 lb |
| Miscellaneous | |
| Package Contents |
|
| Additional Information |
|
| Warranty | |
| Limited Warranty | 5 Year |
| Main Specifications |
| Product Description | ADTRAN TDU 120e - DSU/CSU |
| Device Type | DSU/CSU |
| Form Factor | Rack-mountable |
| Dimensions (WxDxH) | 17 in x 11.6 in x 1.7 in |
| Weight | 7.1 lbs |
| Data Transfer Rate | 1.5 Mbps |
| Line Rate | T-1 |
| Remote Management Protocol | SNMP |
| Power | AC 110/220 V ( 50/60 Hz ) |
| Manufacturer Warranty | 5 years warranty |
| General | |
| Device Type | DSU/CSU |
| Form Factor | Rack-mountable |
| Width | 17 in |
| Depth | 11.6 in |
| Height | 1.7 in |
| Weight | 7.1 lbs |
| Enclosure Color | White |
| Networking | |
| Connectivity Technology | Wired |
| Line Rate | T-1 |
| Data Transfer Rate | 1.5 Mbps |
| Line Coding Format | AMI, B8ZS |
| Framing Format | ANSI T1.403, AT&T 54016, D4, ESF |
| Remote Management Protocol | SNMP |
| Expansion / Connectivity | |
| Expansion Slots Total (Free) | 1 ( 1 ) x expansion slot |
| Interfaces | 1 x serial - V.35 - 34 pin M/34 (V.35) - 1 1 x network - T1-FT1 - RJ-48C - 1 1 x management - RS-232 - RJ-45 - 1 1 x network - Ethernet 10Base-T - RJ-45 - 1 1 x network - DSX-1 - RJ-48C - 1 |
| Miscellaneous | |
| Rack Mounting Kit | Standard |
| Power | |
| Power Device | Power supply - integrated |
| Installed Qty | 1 |
| Voltage Required | AC 110/220 V ± 10% |
| Frequency Required | 50/60 Hz |
WARNING:: The plastic used in cable products can expose you to lead and lead components,
chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information go to www.P65Warnings.ca.gov
