Product overview. Arris T25

Product overview

Front panel

Chapter 2

T25 front view

T25 front panel LED icons

LED Icon Blinking On (Solid)

Not applicable – LED does not blink. Power is properly connected with the device power cord.

Scanning for Upstream (Send) channel and Downstream (Receive) channel connection.

Upstream and Downstream channels are connected.

SURFboard ® T25 Cable Modem with Xfinity Voice User Guide STANDARD Revision x.5

13

Chapter 2: Product overview

LED Icon Blinking

Scanning for an Internet connection.

On (Solid)

T25 is connected to the Internet.

Telephone line 1 is off-hook or call is in progress.

Telephone service for line 1 is connected and activated; on-hook.

Telephone line 2 is off-hook or call is in progress.

Telephone service for Line 2 is connected and activated; on-hook.

Indicator lights for the T25

The T25 has LED indicator lights to assist in troubleshooting.

Patterns: normal operation

The following table shows light patterns during normal operation.

T25 light patterns: normal operation

Mode

AC power

Power US/DS

On On = Connected to the Internet (ultrahigh speed)

Flash = Not connected to the

Internet

Online

On = Internet available

Off = Internet not available

No AC power Off

Firmware upgrade

On

Off

Flash

Off

On

Tel 1 / Tel 2

On = Onhook

Flash = Offhook

Off = disabled

Off

(normal operation)

Patterns: startup sequence

The following tables show the T25 light patterns during each phase of the startup sequence.

There are two phases of startup; the telephony phase and the cable modem phase. Both are outlined below.

SURFboard ® T25 Cable Modem with Xfinity Voice User Guide STANDARD Revision x.5

14

Chapter 2: Product overview

Telephony startup sequence

On

On

On

Power, US/DS,

Online

Off

Flash

Telephone 1 Telephone 2 Description

Off

Flash

Flash

Off

Flash

Off

Flash

Off

Flash

Flash

No power to modem

Power-on self-test

Retrieving telephone network information

Retrieving telephone network information

Activating telephone service

Cable modem startup sequence

DS/US

Flash

On

On

Online Description

Off Downstream or upstream search

Flash

On

Downstream and upstream found; retrieving setup information from service provider

Ready for service

Rear panel

T25 Rear View

SURFboard ® T25 Cable Modem with Xfinity Voice User Guide STANDARD Revision x.5

15

Chapter 2: Product overview

T25 Rear Panel Ports & Connectors

Description

Two telephony ports for RJ-11 cable connections:

■ VoIP connection for a single or two-line telephone

■ VoIP connection for a single-line telephone

Note: For an Alarm system connection, see

Connect your telephone

(page 19).

Reset

10/100/1000

Reset button can be used to either reboot the telephony modem or reset your telephony modem configuration settings. The Reset button is recessed to prevent accidental resets.

Reboot (or restart) the telephony modem

1. Insert the end of a small pointed non-metallic object with a narrow tip into the

Reset opening on the back of your T25.

2. Press and hold the indented Reset button for three to four seconds only.

3. Remove the small object from the Reset opening.

Reset the telephony modem configuration

Resets the telephony modem configuration back to the factory default settings:

1. Insert the end of a small pointed non-metallic object with a narrow tip into the

Reset opening on the back of your T25.

2. Press and hold the indented Reset button for 10 seconds or until the front panel

LEDs flash.

3. Remove the small object from the Reset opening.

Note: For network security purposes, ARRIS recommends that you

change the default admin password on your T25. See Change the default password (page 22) for more information.

Two one-gigabit Ethernet ports for RJ-45 cable connections:

■ Green: LED is ON - Indicates a data transfer rate of one gigabit per second

■ Green: LED is Blinking - Indicates data traffic is in progress

■ Amber: LED is ON - Indicates a data transfer rate of less than one gigabit per second

■ Amber: LED is Blinking - Indicates data traffic is in progress

Coaxial cable connector

115 VAC Power Input connector

Warning: To avoid any damage to your T25, only use the power supply provided in the box.

SURFboard ® T25 Cable Modem with Xfinity Voice User Guide STANDARD Revision x.5

16

Chapter 2: Product overview

Backup power

T25 does not include an internal battery option. To obtain backup power for use in the event of a power outage, purchase an Uninterruptable Power Supply (UPS) and plug your T25 to the UPS as a power source.

Note: Your cable service must be operational for the modem to function. Check for the US/DS and Online LEDs on the front panel. Both LEDs should be lit SOLID white when you power ON the device. If they are not, your cable service is not operational.

Specifications for T25 power usage:

Model Condition App. Power (VA) T25: Idle - 19.917; Full - 30.740

Telephony cable modem label

The telephony cable modem label is located on the bottom of your T25. It contains the voice modem information that you may need when contacting your service provider or ARRIS.

To receive Internet service, contact your service provider for assistance. You may need to provide the following information listed on the label:

■ Telephony cable modem model name (T25)

■ Telephony cable modem MAC address (HFC MAC)

■ Telephony cable modem Serial number (S/N)

SURFboard ® T25 Cable Modem with Xfinity Voice User Guide STANDARD Revision x.5

17