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| Part Number | Description | |
| PA-8T-232 | 8-Port Serial; 232 Port Adapter | |
| PA-8T-232 | 8-Port Serial; 232 Port Adapter | |
| PA-8T-V35 | 8-Port Serial; V.35 Port Adapter | |
| PA-8T-X21 | 8-Port Serial; X.21 Port Adapter | |
| EM-HDA-8FXS | 8-port voice/fax expansion module - FXS | |
| EM-HDA-8FXS | 8-port voice/fax expansion module - FXS | |
| POE-181X | 802.3af PoE Module; 80W Power Supply and Cable | |
| POE-180X | 802.3af PoE Module; 80W Power Supply and Cable | |
| SP-AR2-1751V | 8x5x4 AR Svc, 10/100 Modular Router w/Voice: IOS IP/VO | |
| SP-AR2-1751V | 8x5x4 AR Svc, 10/100 Modular Router w/Voice: IOS IP/VO | |
| SP-AR2-OC48LR-PR | 8x5x4 AR Svc, 2-OC48/SRP-LR-SC-B Lne crds w/ MATE cbl | |
| SP-AR2-OC48LR-PR | 8x5x4 AR Svc, 2-OC48/SRP-LR-SC-B Lne crds w/ MATE cbl | |
| SP-AR2-PWR-PNL | 8x5x4 AR Svc, 48 Port Power Panel | |
| SP-AR2-PWR-PNL | 8x5x4 AR Svc, 48 Port Power Panel | |
| SP-AR2-OC12/SRP | 8x5x4 AR Svc, OC12 SRP single ring LC M mode,S mode | |
| SP-AR2-OC12/SRP | 8x5x4 AR Svc, OC12 SRP single ring LC M mode,S mode | |
| SP-AR2-AXSM32E | 8x5x4 AR Svc; Double-height ATM SM; 32 T1/E1 ports | |
| SP-AR2-AXSM32E | 8x5x4 AR Svc; Double-height ATM SM; 32 T1/E1 ports | |
| SP-AR2-WS-C49XX | 8x5x4 AR Svc; Service for Catalyst 49XX | |
| SP-AR2-WS-C49XX | 8x5x4 AR Svc; Service for Catalyst 49XX |