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| Part Number | Description | |
| ESR-HH-1GE | 1 port Gigabit Ethernet Half-Slot Line Card | |
| OC48X/POS-SR-SC | 1 port OC48 POS Extended features | |
| OC48X/POS-SR-SC | 1 port OC48 POS Extended features | |
| PXM45/C | 1 PXM45/C; 1 PXM-UI-S3/B and 1 PXM-HD in system | |
| PXM45/C | 1 PXM45/C; 1 PXM-UI-S3/B and 1 PXM-HD in system | |
| UCSS-UWL-PRO-1M | 1-Month UWL PRO UCSS | |
| UCSS-UWL-PRO-1M | 1-Month UWL PRO UCSS | |
| UCSS-UWL-STD-1M | 1-Month UWL STD UCSS | |
| UCSS-UWL-STD-1M | 1-Month UWL STD UCSS | |
| UCSS-UWL-PRO1 | 1-Yr UWL PRO UCSS for Gov/Edu Only | |
| UCSS-UWL-STD1 | 1-Yr UWL STD UCSS for Gov/Edu Only | |
| MCC-16-E1 | 16 E1 single height BC; miniature co-ax 1.0/2.3 connectors | |
| MCC-16-E1 | 16 E1 single height BC; miniature co-ax 1.0/2.3 connectors | |
| 16OC3X/POS-I-LC-B | 16 PORT OC3 WITH EXTENDED FEATURES RELEASE B | |
| 16OC3X/POS-I-LC-B | 16 PORT OC3 WITH EXTENDED FEATURES RELEASE B | |
| RBBN-16-T1E1 | 16-port T1E1 BC; Ribbon Type Connector | |
| RBBN-16-T1E1 | 16-port T1E1 BC; Ribbon Type Connector | |
| PXM45/C-R | 2 PXM45/C; 2 PXM-HD; 2 PXM-UI-S3/B | |
| PXM45/C-R | 2 PXM45/C; 2 PXM-HD; 2 PXM-UI-S3/B | |
| UCSS-UWL-PRO | 3-Yr UWL PRO UCSS |