T1/E1 & T3/E3
Digital WAN carrier facility. T1 transmits DS-1-formatted data at 1.544 Mbps through the telephone-switching network, using AMI or B8ZS coding. Compare with E1. See also AMI, B8ZS, and DS-1.
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Key Information
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Technology Information
- Line Coding Info
Technology Q&A
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Design
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Configuration
- Configure SM-X-1T3/E3 on Cisco ISR 4000 Platform
- Configuring an AS5350/AS5400 for Incoming Async and ISDN Calls
- Business Edition 3000 Internal Gateway with T1 Configuration Example
- Configuring and Troubleshooting E1 R2 Signaling for Data Calls
- Master and Slave Relationships on a T1 Back-to-Back Connection
- Configuring a T1 or E1 Interface for Outgoing Analog Calls Using the modem dialout controller Command
- Sample Configuration - Inverse MUX Application using Multilink PPP
- Configuring NFAS with Four T1s
- Configuring Dialin and Dialout on the Same T1/E1 PRI Circuits
- Configuring a Cisco 3600 Router with T1/E1 and Digital Modem Network Modules
Configuration Examples and TechNotes
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Operation and Troubleshooting
- E1 PRI Troubleshooting
- T1 Layer 1 Troubleshooting Flowchart
- Hard Plug Loopback Test
- Blue and Yellow T1 Alarm Troubleshooting
- T1 Layer 1 Troubleshooting
- T1/E1 Loopback Testing and Troubleshooting
- T1 Alarm Troubleshooting
- E1 Alarm Troubleshooting
- E3 Alarm Troubleshooting
- Loopback Tests for T1/56K Lines
- E1 Error Event Troubleshooting Flowchart
- Hard Plug Loopback Tests for E1 Lines
- Overview of General Modem and NAS Line Quality
- E1 Layer 1 Troubleshooting
- E1 PRI Troubleshooting Flowchart
Troubleshooting TechNotes
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