Spectrum D3.1 eMTA Manuel utilisateur

Spectrum D3.1 eMTA

DOCSIS 3.1 Advanced Voice Modem

User Guide

2Spectrum Modem

Understanding Device Connections

Rear Panel:

Voice 1-2: Use to connect analog telephones to the device. Telephone service must be enabled

by the service provider.

Cable: Use to connect to the coaxial cable from your Internet service provider.

Ethernet (Internet): Connects to an Ethernet-enabled device such as a wireless router using

an RJ45 Ethernet cable.

Power: Connects to the power adapter. Plug the other end into the wall power outlet.

Battery: Use to connect to an optional external battery. The battery connection is for voice services.

DOCSIS 3.1 eMTAback of battery backup

DC power

connector

DC power connector

battery connector

battery

connector

3Spectrum Modem

Installing Modem

1. Connect the coaxial cable (not supplied) to the Cable connector on the rear panel of

the eMTA and connect the other end to the cable wall outlet. Do not bend or over tighten

the cables, as this may strain the connector and cause damage. To connect an eMTA and a

television to the same wall outlet, you must use a cable line splitter (not included).

2. Connect the Ethernet cable (supplied) to the Ethernet (Internet) port on the back panel of

the eMTA and connect the other end to an Ethernet port on a wireless router (or other

Ethernet-enabled device).

3. Connect an RJ-11 phone cable (not supplied) to the Voice 1 or 2 port on the modem (when

 

end to the phone port of the telephone. If voice service is not provisioned through the

service provider, telephone service is not available.

4. Connect the power adapter (supplied) to the Power port on the modem. Connect the other

end to a power outlet.

Installation Diagram

XXXXXXXXXXXXXXX

electrical outlet

power supply

(modem)

power supply

(router)

electrical outlet

cable outlet

coax cable

DOCSIS 3.1 eMTA WiFi router

phone

cable

Ethernet cable

phone

splitter

4Spectrum Modem

Device Wall Mount Instructions

You can mount the EU2251 on a wall using the 2 mounting brackets on the side of the device. Two round or



To mount the device on a wall:

1. Install the 2 screws horizontally on the wall 140 mm (5.51 inches) apart.

Note: 

wall. If you install the screws in drywall, use hollow wall anchors to ensure the unit does not pull away from the wall

due to prolonged strain from the cable and power connectors.

2. Mount the device on the wall.

Note to CATV System Installer:

This reminder is provided to call the CATV systems installer's attention to section 820-93 of the National Electric

Code, which provides guidelines for proper grounding and in particular, specify that the Coaxial cable shield shall

be connected to grounding system of the building, as close to the point of cable entry as practical.

Label Size in Millimeters (mm)

A9.5 +/- 0.2

B3.7 +/- 0.1

C34.5 +/- 0.2

140 mm (5.51 inches)

A B C

5Spectrum Modem

Reseting the Modem

Front Panel:

Reset: Use the reset button to either reboot (power cycle) the modem or reset the device

to factory default settings. When the reset button is pressed and held for 4 to 10 seconds,

the device will reboot (power cycle). If the reset button is pressed and held for 10 seconds

or more, the Spectrum eMTA will reset to factory default settings. Refer to the LED Behavior

table on page 5 for the reset button LED behavior.

Reset LED Behavior

Red Ring

Device is waiting to be Power Cycled:

Easing between On Red and O

Reset -Press and hold for 5 seconds to reset modem.

Factory reset -Press and hold for more than 10 seconds

to reset modem to factory default settings.

Note: You will see the ring and text illuminate when you

press the button.

Note: When the device is in a state that suggests a power cycle (the button icon and the surrounding ring are

lit), a factory reset cannot be performed. The user must power cycle the device, then perform a factory reset.

6Spectrum Modem

LED Behavior

LEDs Color Description

Power

Status Light

Blue • Powering Up: Flashing between On Blue and O

• Normal Operation: On Blue

Online

Status Light

Blue

White

• Determining Connection: Easing between On Blue and On White

• Device has entered DOCSIS 3.0 Bonded State: On White

• Device has entered DOCSIS 3.1 Bonded State: On Blue

• Network Access Denied: O

Voice

Status Light

Blue • Voice Service Not Provisioned: O

• Voice Service Active: On Blue

• Phone Cable Connected to Voice Port: On Blue

• Phone Cable Not Connected to Voice Port: On Blue

 O

 

Flashing between On Blue and O

• Unable to Establish Phone Connection: O

Battery

Status Light (NOTE:

external battery is

optional)

BLUE

RED

 On Blue

• Battery at 20% (of usable charge) or Lower: On Red

 

• No Battery Installed: O

• Battery Charging: Easing between On Blue and O

Ethernet (Internet)

Left Status Light

Green

Amber

• On Green - An Ethernet Device is Connected at 100 Mbps

• On Amber - An Ethernet Device is Connected at 2500 Mbps (2.5G)

• O - An Ethernet Device is Connected at 100 Mbps

Ethernet (Internet)

Right Status Light

Amber • On Amber - Data is Being Passed Between the EU2251 and the Connected Device

• O - No link is established

7Spectrum Modem



Interfaces & Standards

• Cable: F-Connector, female

• Models: E31N2V1, E31T2V1, E31U2V1

• LAN: One 10/100/1000 Mbps RJ-45 port

• Models: EN2251, ET2251, EU2251, ES2251

• LAN: One 10/100/2.5 Gbps RJ-45 port

• Telephony: 2 RJ-11 ports

• PacketCable 1.5 (NCS) or 2.0 (IMS/SIP) ccompatible

 

Downstream*

 

 

• Modulation: 64 or 256 QAM and OFDM: up to 4096 QAM

 

• Maximum DOCSIS 3.0 Data Rate: 32 downstream channels provide speeds up to 1372Mbps

• Symbol Rate: 5361 Ksps

• RF (cable) Input Power:

• -15 to +15dBmV (64/256 QAM)

• -6 to +15dBmV (4096 QAM)

• Input Impedance: 75 Ω



Basic Modem Info

Example of Cable

RF MAC Address



Firmware Version

Example

GA-EU2251-P20-01.03.00-BAN.000

Compatibility  

• Ethernet 100/1000/2500 Mbps

• PacketCable 1.5 and 2.0

8Spectrum Modem



Upstream*

 

• Modulation: QPSK or 8/16/32/64/128 QAM and OFDMA: up to 4096 QAM

 

• Maximum DOCSIS 3.0 Data Rate: 8 upstream channels provide speeds up to 246Mbps

• Symbol Rate: 160, 320, 640, 1280, 2560, 5120 Ksps

• RF (cable) Output Power:

• A-TDMA/S-CDMA (one channel): +65dBmV

• OFDMA: +65dBmV

Security

• DOS (denial of service) attack protection

Regulatory

 

Voice

• PacketCable 1.5 (NCS) or 2.0 (IMS/SIP) compatible

 

State: Signaling Loop Start

• DTMF Tone Detection, T.38 Fax Relay (G.711), Echo Cancellation (G.168) / Silence Suppression, Voice

Active Detection and Comfort Noise Generation

• G.722 codec, WB SLIC

Physical and Environmental

 

• Weight: 632.6g (1.4 lbs), unit only

 

 

 

• Optional External Battery

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