Specifications

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Cisco 7100 Series VPN Router Installation and Configuration Guide
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Chapter 3 Installing a Cisco 7100 VPN Series Router
Connecting to the Network
Figure 3-14 Connecting the ATM E3 WAN Ports on the Cisco 7140-2AE3
Note For more information, see the “Cisco 7120-AT3, Cisco 7140-2AT3, Cisco 7120-AE3,
Cisco 7140-2AE3, Cisco 7120-SMI3, and Cisco 7140-2MM3 Cables” section on page C-19.
Connecting the Cisco 7120-SMI3 and Cisco 7140-2MM3
The SMI3 (OC-3c/STM-1 single-mode intermediate reach) and MM3 (OC-3c/STM-1 multimode)
interfaces provide an interface to ATM switching fabrics for transmitting and receiving data at rates of
up to 155 Mbps bidirectionally. The MM3 and SMI3 interfaces connect to the SONET/SDH, 155-Mbps
multimode or single-mode optical fiber.
For SONET/SDH multimode and SONET/SDH single-mode connections, use one duplex SC connector
or two simplex SC connectors. The simplex and duplex SC connectors are shipped with removable dust
covers on each connector. These cables are not available from Cisco.
For information on SONET specifications for fiber-optic transmissions, understanding power budget,
and assistance with approximating the power margin for multimode and single-mode transmissions, see
Appendix C, “Cable Specifications.”
Warning Class 1 laser product.
Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is
connected, avoid exposure to laser radiation and do not stare into open apertures.
To connect the ATM OC-3c/STM-1 port to the network, use the following procedure:
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I
RX
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Serial 1/0
To ATM E3 network
equipment
Ferrite bead