The Cisco® T3/E3 Network Module provides high-speed WAN access for the Cisco 2600, 3600, and 3700 series Multiservice Access routers and well as the Cisco 2800 and 3800 Series Integrated Services Routers. The NM-1T3/E3 network module offers both Service Providers and Enterprise customer's unprecedented flexibility in provisioning clear-channel T3 or E3 connections.

Figure 1. Cisco T3/E3 Network Module

KEY BENEFITS

• Physical space savings-Eliminates the need for external DSU device, saving valuable rack space

• Simplified management-Eliminates the need for two separate monitoring tools

• Software-configurable T3/E3-Provides the flexibility to deploy a single module worldwide

KEY FEATURES

• One-port T3 with DSU or E3 with DSU network module

• T3/E3-specific features for monitoring, bit error rate tester (BERT), Management Information Bases (MIBs), alarms, and more

• Ability to independently or simultaneously enable scrambling and subrate in each DSU mode; support for the following DSU vendors' algorithms: Digital Link, Kentrox, Larscom, Verilink, Adtran.

• Support for the serial encapsulation protocols: Frame Relay, Point-to-Point Protocol (PPP), High-Level Data Link Control (HDLC)

• 16-bit cyclic redundancy check (CRC)

KEY MANAGEMENT FEATURES

• 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)

T3/E3 APPLICATIONS AND POSITIONING

Table 1. Cisco T3/E3 Network Module Branch Office Positioning

Figure 2. Typical Cisco T3/E3 Network Module Deployments

SPECIFICATIONS

Software Support

Table 2. Minimum Cisco IOS Software Requirements for Cisco T3/E3 Network Module

Table 3. Platform Maximum T3/E3 Network Modules Support Comparison

Hardware Specifications

DS3/E3 Specifications

• DSX3 level interface with dual female 75-ohm BNC coaxial connectors per port (separate RX and TX)

• Full- and half-duplex connectivity at DS3 rate (44.736 MHz)

• Full- and half-duplex connectivity at E3 rate (34.368 MHz)

• 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)

Table 4. LED Port Indicators and Status

Serial Encapsulations

• HDLC

• PPP

• Frame Relay

• ATM Data Exchange Interface (ATM-DXI)

Physical Specifications

• Single-wide network module, no slot restrictions

• Dimensions (H x W x D) 1.55 x 7.10 x 7.2 inches (3.9 x 18.0 x 18.3 centimeters)

Environmental Specifications

• Operating temperature: 32 to 104°F (0 to 40°C)

• Storage temperature: -4 to 149°F (-20 to 65°C)

• Relative humidity: 10 to 90%, non condensing

Certification Compliance

DS3 Physical Layer

• ANSI T1.102, T1.107

E3 Physical Layer

• TBR24

• ITU-T G.703 & G.823

• ACA TS016

Safety

• United States (UL1950 3rd Edition/CSA C22.2, No.950)

• Canada (C1950)

• UK (BS6301, EN60950, EN41003)

• Germany (TUV GS)

• France (EN60950, EN41003, NFC98020)

• AS/NZS 3260 (Australia/New Zealand)

• EN60950/EN41003 (Europe)

• IEC 950 (national deviations)

EMC

• 47 CFR 15: 2001 Class A (FCC)

• ICES003 Class A

• EN55022 Class A: 1998

• EN300386: 2001

• EN55024:1998, EN50082-1:1997 and EN61000-6-2: 1999 including:

–ESD: EN61000-4-2

–Radiated Immunity: EN61000-4-3

–Burst Transients: EN61000-4-4

–Surges: EN61000-4-5

–Injected RF: EN61000-4-6

–Dips + Sags: EN61000-4-11

• EN61000-3-2: 1995

• EN61000-3-3: 1995

• AS/NZS 3548 Class A

• VCCI V-3/2000.04 Class A

Standards

• T3/E3 MIB (RFC 1407)