Cisco Systems IAD2430 Interference Considerations, T1/E1-PBX Digital Voice Port Maximum Distances

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Chapter 2 Planning Your Installation

Interference Considerations

T1/E1-PBX Digital Voice Port Maximum Distances

Table 2-5shows the maximum distances between the digital voice port of a Cisco IAD and a digital PBX.

Table 2-5

Digital Voice Port Speed and Distance Limitations

 

 

 

 

Signal Rate

Distance (Feet)

Distance (Meters)

 

 

 

 

T1/E1 (CSU)

3000

915

 

 

 

 

 

FXS Analog Voice Port Maximum Distance

The maximum distance for a Foreign Exchange System (FXS) is established by a total allowable loop resistance, including off-hook phone or terminal equipment, of 600 ohm. The maximum distance is 100 meters away from the system as a limitation of Ethernet.

FXO Analog Voice Port Maximum Distance

The maximum distance is determined by the distance between the PBX or other equipment that provides battery and the connection to the FXO voice port.

Interference Considerations

When you run cables for any significant distance in an electromagnetic field, interference can occur between the electromagnetic field and the signals on the cables. This has two implications for installating terminal plant cabling:

Unshielded plant cabling can emit radio interference.

Strong electromagnetic interference (EMI), especially that caused by lightning or radio transmitters, can destroy the EIA/TIA-232 drivers and receivers in the Cisco IAD.

If you use twisted-pair cables with a good distribution of grounding conductors in your plant cabling, emitted radio interference is unlikely.

If you have cables that exceed the recommended distances, or if you have cables that pass between buildings, give special consideration to the effect of lightning strikes or ground loops. If your site has these characteristics, consult experts in lightning suppression and shielding. The electromagnetic pulse caused by lightning or other high-energy phenomena can easily couple enough energy into unshielded conductors to destroy electronic devices.

Without pulse meters and other special equipment, most data centers cannot resolve the infrequent but potentially catastrophic problems just described. Take precautions to avoid these problems by providing a properly grounded and shielded environment and by installing electrical surge suppression.

If you remove any module, you must either install a module in its place or install a cover plate over the opening. All module openings must be either occupied or covered to prevent electromagnetic interference.

For advice on the prevention of electromagnetic interference, consult experts in radio frequency interference (RFI).

Cisco IAD2430 Series Integrated Access Devices Hardware Installation Guide

2-6

OL-4234-06

 

 

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Contents Americas Headquarters Text Part Number OL-4234-06Copyright 2003 2008 Cisco Systems, Inc. All rights reserved N T E N T S Safety Tips Cable Connecting to a Remote PC Audience OrganizationChapter Title Description Safety Warnings ConventionsConvention Description Waarschuwing Belangrijke Veiligheidsinstructies Hinweis Bewahren SIE Diese Sicherheitsanweisungen AUFOBS! Spara Dessa Anvisningar Page Guarde Estas Instruções Xiii Product Serial Number Location XivAccessibility Serial Number Location on Cisco IAD2430 Series RoutersRelated Documentation Cisco Product Document Title and URLOverview of Cisco IAD2430 Series IADs OverviewCisco IAD2430 Series IADs Front Panel Cisco IAD2430-24FXS IAD Cisco IAD2431-8FXS IADCisco IAD2431-16FXS Cisco IAD2431-1T1E1 IADCisco IAD2432-24FXS IAD Cisco IAD2435-8FXS IADPhysical Description Cisco IAD2435-8FXS ChassisLEDs 10 Cisco IAD2435 Series IAD Back Panel Function OptionsLED/Color Description Cisco IAD2435 Series LEDsChassis Grounding MemoryPort Numbering Conventions LED/Color LED Color and DescriptionSpecifications Configuration ConnectionsConfiguration Methods Software ElementsInterfaces and Service Capabilities Manual ConfigurationWAN Configuration Options Deployment OptionsCisco IAD2430 Series RJ-21 T1/E1 T1/E1 with T1/E1 Interface to PBX Temperature Control and Ventilation Location and Mounting RequirementsAccess to Chassis Power SourceChassis Grounding Cable Types EIA/TIA-530/EIA/TIA-530A DCE/DTESignal Rate Distance Feet Distance Meters Distance Limitations for Interface CablesFast Ethernet Maximum Distance T1/E1-WAN Port Maximum DistancesEIA/TIA-449, V.35, and X.21 Speed and Distance Limitations Interference Considerations T1/E1-PBX Digital Voice Port Maximum DistancesFXS Analog Voice Port Maximum Distance FXO Analog Voice Port Maximum DistanceInstalling Cisco IAD2430 Series IADs Safety Recommendations Maintaining Safety with ElectricityGeneral Safety Practices Safety TipsKeeping Track-Checklist Site LogPreventing Electrostatic Discharge Damage Installation Checklist Mounting Tools and EquipmentTask Verified by Date Unpacking and Inspection Quick Installation Bracket for Cisco IAD2435-8FXS Routers Rack-Mounting the ChassisMounting Screws Attaching the BracketsInstalling the Cisco IAD2430 Series IADs in a Rack Telco 19-Inch Rack Installation-Back Panel ForwardWall-Mounting the Chassis Attaching the Chassis to the 19-Inch Rack10shows the orientation required for installation Wall-Mounting the Cisco IAD2435 IADs 10 Wall-Mounting the ChassisRubber feet 12 Mounting the IAD2435 Router on a Wall Installing the Ground Connection Setting the Cisco IAD2435 on a DesktopDesktop-Mounting the Chassis Page To a torque of 8 to 10 in-lb 0.9 to 1.1 N-m Installing a WAN or Voice Card 16 Chassis Ground Connection Using Ring TerminalConnecting Cables Cisco IAD ports are color-coded for identificationLAN and Power Cables Nebs Tests ResultsConnected To Cable 17 LAN and Administrative Access Connections Connecting the Input Power ProcedureConnecting the Console Port to a PC or an Ascii Terminal 19 Connecting the External Power Supply to the Cisco IAD2435Connecting the Auxiliary Port to a Modem WAN and Voice Cables Color or Type Connected To CableConnecting the RJ-21 Cable in the Velcro Harness 20 WAN and Voice Connections22 Sliding the RJ-21 Cable Through the Velcro Harness 24 Tightening the Captive Screws DTE only with EIA/TIA -530 signaling Use an RJ-48 T1/E1 cable not included Connecting the Digital Voice Port to a T1/E1-PBX Connect the RJ-48 T1/E1 cable to the T1/E1 port. See FigurePorts, Connectors, and Pinouts Cisco IAD Port Port Color Connector/Cable Interface ToRemote Terminal Connections If Applicable Connecting to a Modem Connecting to a Remote PCConnecting to a Remote Ascii Terminal Connecting Backup Power Connecting a Backup Battery to a DC-Powered IADCisco IAD2430 Model Power Consumption Watts 30 Connecting a Backup Battery to a DC-Powered Cisco IAD Pin Number Description32shows a setup using a UPS OL-4234-06 Checklist for Power-On Power-On ProcedureInitial Configuration Procedures Cisco IOS CLI Press Return or Enter. The following message is displayedSetup Command Facility Configuration is displayed Manual Configuration Setting the Fast Ethernet Port IP AddressObtaining Your Network Information Configuring a T1/E1 Port for a WAN Connection Command PurposeConfiguring Digital Voice Verifying and Saving Your ConfigurationTroubleshooting NvramSymptom Possible Cause Corrective Action Numerics IN-2 IN-3 IN-4

IAD2430 specifications

Cisco Systems IAD2430 is a versatile Integrated Access Device (IAD) designed to deliver voice and data services to small and medium-sized businesses. This device plays a pivotal role in the convergence of voice and data networks, offering a comprehensive solution that simplifies management and enhances operational efficiency.

One of the most compelling features of the IAD2430 is its support for both traditional TDM (Time-Division Multiplexing) and VoIP (Voice over Internet Protocol) technologies. This dual capability enables businesses to migrate to IP-based voice solutions while still maintaining their existing TDM infrastructure. The IAD2430 is equipped with multiple built-in voice ports, allowing it to support a variety of telephony applications.

In terms of performance, the IAD2430 offers robust Quality of Service (QoS) features that prioritize voice traffic to maintain call clarity and reliability. This is particularly critical in environments where voice communication is essential for daily operations. QoS mechanisms ensure that voice packets are transmitted with minimal latency, jitter, and packet loss, providing an uninterrupted communication experience.

The IAD2430 also boasts advanced security features, including firewall protection and encrypted data transmission. This is particularly important for businesses looking to protect sensitive information and ensure compliance with industry regulations. The built-in security measures help safeguard against unauthorized access and potential threats, providing peace of mind to users.

Moreover, the device supports various WAN connections, including T1, DSL, and Ethernet, making it adaptable to different network environments. Its flexible connectivity options allow for seamless integration with existing network infrastructure while maximizing bandwidth utilization.

Management and configuration of the IAD2430 are simplified through a user-friendly web interface and support for remote administration. This allows IT staff to efficiently configure and monitor the device without the need for onsite visits, thus reducing operational costs.

In summary, the Cisco Systems IAD2430 stands out as a reliable and feature-rich IAD capable of catering to the needs of businesses that require integrated voice and data services. Its combination of TDM and VoIP support, enhanced QoS, robust security features, and flexible connectivity options make it an ideal choice for organizations looking to streamline their communication solutions.