### Nortel NTN441AH – OM3500 OC-3x4 IR1 Interface Module (Extended Temp) | SNI5KW9DAA
The **Nortel NTN441AH**, also known by code **SNI5KW9DAA**, is a **4-port OC-3 IR1 interface module** for the **OM3500 optical transport system**. This card provides intermediate-reach (IR1) SONET connectivity at OC-3 (155 Mbps) rates, across four optical ports. It is specifically built to handle **extended temperature environments**, making it ideal for deployment in less-controlled spaces such as outdoor cabinets or harsh telecom facilities.
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### ? Key Features:
- **Part Number**: NTN441AH
- **Alternate Code**: SNI5KW9DAA
- **Platform**: Nortel OM3500
- **Interface Type**: OC-3x4 (4 ports, intermediate reach)
- **Temperature Rating**: Extended temp (hardened design)
- **Protocol Support**: SONET (OC-3), SDH equivalent
- **Applications**:
- SONET ring connectivity
- Access/metro deployments
- Industrial and outdoor telecom use cases
- Legacy transport network maintenance
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### ? Technical Specs:
- **Port Count**: 4 x OC-3 (IR1)
- **Line Rate**: 155 Mbps per port
- **Reach**: Intermediate Reach 1
- **Operating Temperature**: Extended (-40°C to +65°C typical)
- **Form Factor**: Plug-in module for OM3500 shelf
- **Condition**: Fully tested and certified
- **Warranty**: Included
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### ✅ Why Buy from Us?
✔ 100% Genuine Nortel Hardware
✔ Fully Tested with Report
✔ Extended Temp Units Available
✔ Fast International Shipping
✔ Bulk Discounts for ISPs, Carriers, and Integrators
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**Order the Nortel NTN441AH today** to support legacy SONET infrastructure in harsh environments using the OM3500 platform.
