Electrostatic discharge (ESD) can damage equipment and impair electrical circuitry. It can occur if electronic printed circuit cards are improperly handled and can cause complete or intermittent failures. Always follow ESD prevention procedures when removing and replacing modules:

• Ensure that the router chassis is electrically connected to ground.

• Wear an ESD-preventive wrist strap, ensuring that it makes good skin contact. Connect the clip to an unpainted surface of the chassis frame to channel unwanted ESD voltages safely to ground. To guard against ESD damage and shocks, the wrist strap and cord must operate effectively.

• If no wrist strap is available, ground yourself by touching a metal part of the chassis.

Caution

For the safety of your equipment, periodically check the resistance value of the anti-static strap. It should be between 1 and 10 megohms (Mohm).

The NEBS GR-1089-CORE and GR-63-CORE compliance statements and requirements are listed in this section. These statements only apply for deployments where NEBS compliance is mandated.

Warning

The intra-building port(s) (LAN, WAN, Serial, and T1 (NIM-xMFT-T1/E1 module)) of the equipment or subassembly must use shielded intra-building cabling/wiring that is grounded at both ends. Statement 7003

Warning

The intra-building port(s) (LAN, WAN, Serial, and T1 (NIM-xMFT-T1/E1 module)) of the equipment or subassembly is suitable for connection to intra-building or unexposed wiring or cabling only. The intra-building port(s) of the equipment or subassembly must not be metallically connected to interfaces that connect to the OSP or its wiring for more than 6 meters (approximately 20 feet). These interfaces are designed for use as intra-building interfaces only (Type 2, 4, or 4a ports as described in GR-1089) and require isolation from the exposed OSP cabling. The addition of Primary Protectors is not sufficient protection in order to connect these interfaces metallically to an OSP wiring system. Statement 7005

Warning

The AC power ports have been evaluated for deployments where an external Surge Protective Device (SPD) is utilized at the AC power service equipment (see definition in National Electric Code). Statement 7012

Warning

This product is designed for a Common Bonding Network (CBN) installation. Statement 7013

Warning

This product can be installed in network telecommunication facilities or locations where the National Electric Code applies. Statement 8015 and 8016

Warning

The DC return connection to this system should remain isolated from the system frame and chassis (DC-I). Statement 7016

Note	Statement 7018—System Recover Time The equipment is designed to boot up in less than 30 minutes provided the neighboring devices are fully operational.

The following instructions and requirements are mandated for the C1100TG series when the NIM-LTEA-EA module is installed in a NEBS deployment utilizing cables connected to outdoor antennas:

• Additional surge protection is required if an outdoor antenna is being connected to the GPS connector and/or the LTE TNC connectors. The Lightning Protector must be able to provide a low clamping voltage (less than 600V).

• Lightning protection must be mounted at the location where the antenna cable enters the building. The primary lightning protection must be capable of conducting all potentially dangerous electrical energy to PE (Protective Earth).

• Surge arrestors should support DC-pass and suitable for the frequency range with low attenuation.

Cisco 1100 Terminal Gateway Routers includes brackets for use with a 19-inch rack and 23-inch rack.

Note	The 23-inch rack mount brackets have not been evaluated for NEBS compliance. If 23-inch racks are being used, 19-inch to 23-inch adapter plates compliant with GR-63-CORE Zone 4 waveforms must be used.

The following information can help you plan your equipment rack configuration:

• Allow clearance around the rack for maintenance.

• Allowat least one rack unit of vertical space between routers; more clearance is required when stacking multiple Cisco 1100 Terminal Gateway Routers. Provide adequate heat removal mechanism to keep the surrounding air temperature well within the specified operating temperature condition.

  Note	More spacing may be required depending on the installation environment.

• Enclosed racks must have adequate ventilation. Ensure that the rack is not congested, because each router generates heat. An enclosed rack should have louvered sides and a fan to provide cooling air. Heat generated by equipment near the bottom of the rack can be drawn upward into the intake ports of the equipment above it.

• When mounting a chassis in an open rack, ensure that the rack frame does not block the intake or exhaust ports. If the chassis is installed on slides, check the position of the chassis when it is seated in the rack.

Cisco 1100 Terminal Gateway Routerscan be placed on a desktop or installed in a rack. The location of your router and the layout of your equipment rack or wiring room are extremely important considerations for proper operation. Equipment placed too close together, inadequate ventilation, and inaccessible panels can cause malfunctions and shutdowns, and can make maintenance difficult. Plan for access to both front and rear panels of the router.

When planning your site layout and equipment locations, refer to the General Site Requirements , section. If you are currently experiencing shutdowns or an unusually high number of errors with your existing equipment, these precautions and recommendations may help you isolate the cause of failure and prevent future problems.

• Ensure that the room where your router operates has adequate air circulation. Electrical equipment generates heat. Without adequate air circulation, ambient air temperature may not cool equipment to acceptable operating temperatures.

• Always follow ESD-prevention procedures described in the Preventing Electrostatic Discharge Damage to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure.

• Baffles can help to isolate exhaust air from intake air, which also helps to draw cooling air through the chassis. The best placement of the baffles depends on the airflow patterns in the rack, which can be found by experimenting with different configurations.

• When equipment installed in a rack (particularly in an enclosed rack) fails, try operating the equipment by itself, if possible. Power off other equipment in the rack (and in adjacent racks) to allow the router under test a maximum of cooling air and clean power.

Check the power at your site to ensure that you are receiving power that is free of spikes and noise. Install power conditioner if necessary.

The following sections describe the cables and thee specifications required to install Cisco 1100 Series ISRs: