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- Description
- Specifications
Cisco 3600 series routers and the Cisco 3725 accept the NM-1A-OC3SMI, a 1-port ATM OC-3 network module with a single-mode intermediate-reach (SMI) fiber uplink. It is not supported in the Cisco 3631. The module gives 155-Mbps ATM connectivity with STS-3c and STM-1 framing.
Single-mode cable for the port has a 9-micron core under IEC 793-2 and ANSI/TIA/EIA-492 CAAA, and an SMI path can reach 9.3 miles (15 km). The fiber ends in one duplex SC connector or two simplex SC connectors. Keep the transmit port covered whenever no cable is attached, as the module uses a small laser.
A Cisco 3620 needs a minimum PCMCIA controller revision to recognize the module. Units in the field before April 1999 have Revision C, which does not work; 3620 routers shipped from April 1999 have Revision E. More modules are in the Cisco interface card category.
| Part number | NM-1A-OC3SMI |
| Type | 1-port ATM OC-3c/STM-1 single-mode intermediate-reach network module |
| Port | 1 x SMI fiber uplink |
| Connector | one duplex SC or two simplex SC |
| ATM rate and framing | 155 Mbps, STS-3c and STM-1 |
| Fiber | 9-micron core, SMI path up to 9.3 miles (15 km) |
| Cisco 3620 note | PCMCIA controller Revision C not supported, Revision E supported |
| Not supported in | Cisco 3631 |
| Compatible with | Cisco 3600 series routers and Cisco 3725 |