Lifetime Warranty
Manufacturer: Cisco
Product ID: NM-1T3/E3
Product Description: One port T3/E3 network module
Shipping: Typically ships within 2-3 days
Warranty: Lifetime Warranty
Any Questions?
1-800-TO-MULTI or Email

Pre-Owned, Used And Refurbished Cisco NM-1T3/E3

The Cisco NM-1T3/E3 is a one-port clear-channel T3/E3 network module that provides high-speed WAN access for the Cisco 2600, 3600, and 3700 series Multiservice Access routers as well as the Cisco 2800 and 3800 Series Integrated Services Routers. The NM-1T3/E3 network module offers both enterprise customers and service providers the unprecedented flexibility in providing clear-channel T3 or E3 connections.

With the NM-1T3/E3, there is no longer a need for an external DSU. The module offers an integrated LIU DSU that allows T3 or E3 lines to be terminated directly on a Cisco router. This is what eliminates the need for external DSU equipment. It also provides highly manageable T3/E3 line termination and reduces provisioning costs. A simplified T3/E3 line management minimizes provisioning cost and also frees up invaluable rack space. The Cisco T3/E3 Network Module has direct connectivity to a T3 line for full-duplex communications at the rate of 44.736 MHz for T3and full-duplex E3 communications at 34.368 MHz. Each port (T3 or E3) consists of dual 75-ohm BNC coaxial connectors sold as Type RG-59. One is for transmit data and one for receive data. There are also six LED indicators for line status. The Cisco T3/E3 Network Module is conveniently supported in all Cisco IOS feature sets -- there are no additional memory requirements.

Here at MULTI-LINK Communications Products (MLCP), we're proud of our reputation of providing discounted refurbished equipment to our customers affordably and quickly. But what we're most proud of is that the hardware we sell is of the highest possible quality. We ensure this by testing all used and pre-owned equipment twice - once upon receipt and again before shipping it to our customers - making certain that it meets factory specifications. Your Cisco NM-1T3/E3 purchase, regardless of whether it is new or refurbished, comes with our standard lifetime warranty.

Are you ready to upgrade or downsize? MULTI-LINK offers generous trade-in credit for Cisco NM-1T3/E3 and other networking equipment. With several methods to help capitalize your surplus equipment and maximize your ROI, we invite you to visit our Investment Recapture Page or contact us at 1-800-TO MULTI (866-8584) to discuss how we can help extend your networking budget. We're happy to help you sell us your surplus hardware.

You might also be interested in WIC-1AM-V2.

General Information
Manufacturer: Cisco
Product ID: NM-1T3/E3
Product Description: One port T3/E3 network module
Product Type: Switching Module
Marketing Information

The Cisco T3/E3 Network Module provides high-speed WAN access for the Cisco 2600, 3600, and 3700 series routers. T3/E3 WAN access enables the network to carry high volumes of data and rich multimedia content, while providing low latency for voice over IP (VoIP).

Technical Information
Application/Usage: Switching Network
Interfaces/Ports Details: 1 x BNC Female T3/E3 Network Full-duplex WAN
Media & Performance
Media Type Supported: Coaxial
Network Technology: T3/E3
Maximum Data Transfer Rate: 44.74 Mbit/s
Physical Characteristics
Height: 1.6"
Width: 7.1"
Depth: 7.2"
Additional Information:
  • DSX3 level interface with dual female 75-ohm BNC coaxial connectors per port (separate RX and TX)
  • Scrambling and subrate support of major DSU vendors
  • Line build-out - Programmable for up to 450 feet of 734A or equivalent coaxial cable or up to 225 feet for 728A or equivalent coaxial cable
  • C-bit, or M23 framing for T3, bypass and G.751 framing for E3 (software selectable)
  • Binary 3-zero substitution (B3ZS) (T3) or high-density bipolar with three zeros (HDB3) (E3) line coding
  • Support for 16- and 32-bit CRC (16-bit default)
  • DS3 FEAC channel support
  • Twenty-four-hour history maintained for error statistics and failure counts
  • DS3 alarm and event detection (once per second polling)
  • Alarm indication signal (AIS)
  • Out of frame (OOF)
  • Line code violation (LCV)
  • Excessive zeros (EXZ)
  • Far-end receive failure (FERF)
  • Line and payload loopback capabilities
  • DS3 remote-line loopback (via Far End Alarm and Control [FEAC] codes per American National Standards Institute [ANSI] T1.107a)
  • Response to embedded loopback commands
  • Insertion of loopback commands into transmitted signal
  • Programmable pseudorandom pattern up to 32 bits long, including 223, 220, 215, 1s, 0s, alt-0-1
  • 32-bit error count and bit-count registers
  • Alarm detection - Alarm indication signal (AIS), remote alarm, far-end block error (FEBE), out of frame (OOF)
  • Onboard processor for Maintenance Data Link (MDL)
  • Physical space savings - Eliminates the need for external DSU device, saving valuable rack space
  • Software-configurable T3/E3 - Provides the flexibility to deploy a single module worldwide

    Serial Encapsulations:
  • HDLC
  • PPP
  • Frame Relay
  • ATM Data Exchange Interface (ATM-DXI)
Compatibility: Supported Platforms & Minimum IOS Versions:
  • 3745 - 12.2(11)YT
  • 3725 - 12.2(11)YT
  • 3660 series - 12.2(11)YT
  • 3640 - Not Available
  • 3620 - Not Available
  • 2691 - 12.2(11)YT
  • 2650 - Not Available
  • 2600XM Series - 12.2(11)YT
  • 2600 series - Not Available
  • 1720 - Not Available
  • 1600 series - Not Available

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