> Cabling the Optical (ATM) Line Cards
> This chapter provides information physical interfaces and instructions for installing the cables on the Optical Line Card (OLC2).
> This chapter includes the following sections:

> • | Optical (ATM) Line Card Interfaces

> • | Cabling the Optical SFP Interface

> Optical (ATM) Line Card Interfaces
> The OLC2 has four optical fiber interfaces (ports) that support IP or Broadband-SS7 over ATM (Asynchronous Transfer Mode). These ports connect our SGSN products via IuPS interfaces to other elements in the packet data network.
> The type of optical fiber interface on the line card is dictated by the Small Form-factor Pluggable (SFP) transceiver modules installed on the line card. The OLC2 supports two versions of SFP modules. SFP modules are hot-pluggable.
> SFP Modules Supported by the OLC2 Optical (ATM) Line Card

> Module Type | Card Identification | Interface Type | Cable Specifications
> Single-mode Optical Fiber | ATM/POS OC-3 SM IR-1 | Single-mode Fiber, LC duplex female connector | Fiber Types: Single-mode optical fiber Wavelength: 1310 nm Core Size: 9 micrometers Cladding Diameter: 125 micrometers Range: Intermediate/21 kilometers Attenuation: 0.25 dB/KM Min/Max Tx Power: -15 dBm/-8 dBm Rx Sensitivity: -28 dBm
> Multi-mode Optical Fiber | ATM/POS OC-3 Multi-Mode | Multi-mode Fiber, LC duplex female connector | Fiber Types: Multi-mode optical fiber Wavelength: 1310 nm Core Size: 62.5 micrometers Cladding Diameter: 125 micrometers Range: Short/2 kilometers Min/Max Tx Power: -19 dBm/-14 dBm Rx Sensitivity: -30 dBm

> ‌
> Important: Because of the optical SFP interface, this product has been tested and found to comply with the limits for Class 1 laser devices for IEC825, EN60825, and 21CFR1040 specifications.
> The following figure shows the optical interface, labelled ATM/POS OC-3, for the optical (ATM) line card. Each SFP fiber interface is equipped with a transmit (TX) port and a receive (RX) port.
> Optical (ATM) Line Card Fiber Interfaces
> Cabling the Optical SFP Interface
> To use the optical SFP interfaces on the OLC2 (ATM), follow the instructions below.
> Warning: Only trained and qualified personnel should install, replace, or service this equipment. Invisible laser radiation may be emitted from the aperture of the port when no cable is connected. Avoid exposure to laser radiation and do not look into open apertures. Be sure to keep the cover on the interface when it is not in use. Laser Klasse 1 - nur speziell ausgebildetes Personal darf dieses Geraet warten. Nicht in den Laser schauen, um Augenverletzungen zu vermeiden. Nicht genutzte Buchsen mit der entsprechenden Kappe verschliessen.

> Step 1 | Remove the cover from the SFP interface.

> Step 2 | Insert the optical cable from a network device into the interface and ensure that it is securely in place.

Cisco Systems Inc.
Tel: 408-526-4000
Fax: 408-527-0883