Arris SURFboard T25 User manual

QUICK START GUIDE
Cable Modem with
Xfinity Voice
T25

2
What’s in the Box
12vDC 2.5A
Power Adapter
Ethernet Cable
Soware License
& Warranty Card
Support
Information
Card
Quick Start Guide
T25
T25 Cable Modem
with Xfinity Voice

3
Introduction
Status Indicators
Let’s Get Started
Cable Modem Web Manager
4
7
14
1
3
2

4
1
Status Indicators

5
Telephone service for lines 1
& 2 are connected.
Voice cable modem is
connected to the network
Upstream (Send data) and
Downstream (Receive data)
channels are connected
Power is properly connected
to the voice cable modem
On
On
On
Flash
Note: Detailed LED status information is available
online in the SURFboard T25 User Guide at the ARRIS
Support website, www.arris.com/selelp.
Front Panel LEDs
Power
US/DS
Online
Tel1 &
Tel2

6
The SURFboardT25 is a combination DOCSIS 3.0
telephony cable modem with twoVoice-over-IP (VoIP)
telephone lines. It uses DOCSIS 3.0 technology to
provide ultra high-speed Internet access on your home
or small business network.
For whole home connectivity, use theT25 Ethernet
port to add a Wi-Fi router (separate purchase).
Using the connection capabilities of theT25, you can
connect your computer and other network-enabled
devices via the two Ethernet ports.TheT25 connects
to the existing coaxial coaxial cable connection in your
home.
Note: For Internet connections, you need a cable
service connection with a cable Internet Service
Provider. TheT25 will not work with DSL or satellite
Internet service.

7
Let’s Get Started
2

8
Connect the coaxial cable (not included) from the
cable wall outlet or RF splier to the Cable connector
on the rear of your cable modem.
A
Tighten the cable
connector by hand.

9
Connect the Ethernet cable to Ethernet port 1 on the
rear of your cable modem and the Ethernet port on
your PC or laptop.
B
Ethernet port 2 is
bridged to Ethernet
port 1. Your Internet
service provider
may require a
subscription to a
second IP address
to support using
both Ethernet ports.

10
Connect the power adapter to the Power port on
the rear of your cable modem, then plug it into an
electrical wall outlet that is not controlled by a wall
switch.
C
Your cable modem will
automatically power
ON when the power
adapter is connected.