Overview

Two power-saving options are available on the phone to reduce power consumption during periods of inactivity.

Display Off Mode

When the Office Hours feature is enabled, the phone turns off its display according to the configured schedule. Users can light up the display by pressing any key on the phone.

Deep Sleep Mode

In Deep Sleep Mode, the phone automatically powers down during the designated periods. You can choose to enable Deep Sleep Mode exclusively for non-workdays, or for both non-workdays and non-working hours on workdays. To wake up the phone, press the Select button on the Navigation Cluster, or tap the Home button on 9871 and 8875 phones.

While in Deep Sleep Mode, no calls, including emergency calls, can be made on the phone; and the Action button on the top-right of the device isn't accessible.

For Cisco Video Phone 8875, Deep Sleep Mode can only be enabled by Cisco switches through the smart power feature.

Phones in deep sleep show as Offline (Deep Sleep) in Control Hub.

Enable your phone to manage its own power modes

By default, the Office Hours feature is enabled on your phone. The default office hours are set to 7:00 to 19:00 from Monday to Friday. The phone turns off the screen outside of the designated hours. You can customize working hours, workdays, and the power-saving modes — Display Off and Deep Sleep.

1

From the customer view in Control Hub, go to Devices, and then select your phone.

2

Select All configurations.

3

Navigate to Phone > Office Hours.

4

Customize working hours and workdays to reflect the business hours of your users.

  • Enabled: By default, the Office Hours feature is enabled. If set to False, your phone won't enter power saving mode.

  • Workdays: The default workdays are Monday through Friday. Change the workdays as needed.

  • Working Hours Start and Working Hours End: The default working hours are set to 7:00 to 19:00. Change the setting as needed.

For more information about the parameters, see Parameters for Office Hours.

5

Configure the settings for Display Off Mode for both working hours and non-working hours.

  • In Office Hours > Display Off: By default, the phone display remains on during working hours. To enable the phone to enter Display Off Mode when inactive, select timeout period from the list.

  • Outside Office Hours > Display Off Idle Timeout: Set the timeout period in minutes for the phone to automatically turn off the screen after being awakened during Display Off Mode.

  • Outside Office Hours > LED Indicator In Display Off Mode: This setting determines whether to turn off the Front Arc LED when the phone enters Display Off Mode, both during or outside office hours. By default, the Front Arc LED remains illuminated after the phone enters Display Off Mode. When set to disabled, the Front Arc LED is off in Display Off Mode.

For more information about the parameters, see Parameters for Office Hours.

6

Configure the settings for Deep Sleep Mode for the 9800 Series phones.

Cisco Video Phone 8875 doesn't support Deep Sleep Mode. Skip this step while configuring settings for 8875 phones.

A random timer is applied on top of the specified power-on and power-off times to avoid sudden surges in power demand or network traffic. The phone powers off with a random delay of 0 to 10 minutes after the specified power-off time, and powers on 0 to 60 minutes before the specified power-on time, randomly. Contact Cisco Technical Assistance Center (TAC) if you want to modify the random timer.

  • Deep Sleep Enabled: Enable this feature to allow the phone to power off outside office hours.

  • Phone Off Time After Working Hour End: Set the timeout period for the phone to automatically power off after the time specified in the Working Hours End field. The default setting is 60 minutes.

  • Phone On Time Before Working Hour Start: Set the timeout period for the phone to wake up from Deep Sleep Mode before the time specified in the Working Hours Start field. The default setting is 60 minutes.

  • Enable Audible Alert (Optional): If set to True, the phone plays audio tone to alert the user before it enters Deep Sleep Mode.

  • Idle Timeout: Set timeout period for the phone to enter Deep Sleep Mode.

For more information about the parameters, see Parameters for Office Hours.

7

Select Next.

8

Review your changes and select Apply.

9

Select Close to close the page.

Allow Cisco switches to manage power modes for your phones (smart power)

The smart power feature allows Cisco Smart Switches to put your phone into Deep Sleep Mode and wake it up based on the office hours configured in Control Hub.

Before you begin

  • Your phone uses Power over Ethernet (PoE) as the power source. If a power cube is connected, the smart power feature is automatically disabled.

  • You phone is connected to a Cisco Smart Switch C9350 with IOS XE 17.18.2 or later.

  • To use the smart power feature, you must first enable the Office Hours feature on your phone.

1

From the customer view in Control Hub, go to Devices, and then select your phone.

2

Select All configurations.

3

Navigate to the Phone > Office Hours > Office Hours > Outside Office Hours > Smart Power.

4

Configure the following parameters:

  • Enabled: Enable the smart power feature. The available options are:
    • False (Default): Disables smart power.
    • Non-work Day Only: Enables smart power only on non-working days.
    • All Days: Enables smart power always, on both work days and non-work days.
  • Domain: Enter the smart power domain that the phone belongs to.

    A security secret is required for the smart power domain. Contact Cisco Technical Assistance Center (TAC) to add your secret.

5

Select Next.

6

Review your changes and select Apply.

7

Select Close to close the page.

Parameters for Office Hours

Table 1. Parameters for the Office Hours configuration
ParameterDefault and optionsDescription
Office Hours
Enabled

Default: True

Options: False, True

Set this option to True to enable the Office Hours feature for your phones. The Office Hours feature is designed to minimize power consumption during inactivity periods.

You can configure the phone to automatically turn off the screen (Display Off Mode) or power off (Deep Sleep Mode) outside of the designated working periods.

In Office Hours > Display Off

Default: Disabled

Options: Disabled, In 1 minute, In 5 minutes, In 30 minutes

Enable or disable Display Off Mode during office hours. This feature is disabled by default, keeping the phone screen always on during office hours. To enable this feature, select a timeout duration from the available options. For example, if set to "In 5 minutes", the phone screen will automatically turn off after 5 minutes of inactivity.

The LED indicator follows the setting found in Outside Office Hours > Display Off > LED Indicator In Display Off Mode.

Outside Office Hours > Deep Sleep

Only available on 9800 Series.

For Cisco Video Phone 8875, Smart Power controls its Deep Sleep Mode. For more information, see the Outside Office Hours > Smart Power section in this table.)

Deep Sleep Enabled

Default: False

Options: False, Non-work Day Only, All Days

Enable or disable Deep Sleep Mode on the phone. When enabled, this feature automatically powers off the phone outside of the designated office hours.

This option works only when the Office Hours is enabled.

When set to False, the phone will not enter Deep Sleep Mode.

When set to Non-work Day Only, the phone will power off exclusively on non-workdays. For the specified workdays, the phone will only turn off the screen outside of the specified working hours.

When set to All Days, the phone will power off during both non-workdays and non-working hours on workdays.

Set working hours for workdays using the Working Hour Start and Working Hour End fields.

Phone Off Time After Working Hour End

Default: 60

Options: 0 - 360

Set the timeout period, in minutes, for the phone to automatically power off after the time specified in the Working Hours End field. If you want the phone to enter Deep Sleep Mode immediately after working hours, set it to 0.

Phone On Time Before Working Hour Start

Default: 60

Options: 0 - 360

Set the timeout period for the phone to wake up from Deep Sleep Mode before the time specified in the Working Hours Start field. If you want the phone to wake up until working hours start, set it to 0.

Enable Audible Alert

Default: False

Options: False, True

Enable or disable the phone to play audio tone to alert the user before it enters Deep Sleep Mode.

Idle Timeout

Default: 30

Options: 1 - 60

This setting applies to the following two scenarios:

  • Before the phone enters a scheduled Deep Sleep Mode

    Ten minutes before the scheduled deep sleep, a message pops up to notify the user that the phone will power off in ten minutes, and a countdown starts. When it times out, the phone powers off.

  • After being manually awakened from Deep Sleep Mode

    For example, if you have set this field to 20, after being idle for 20 minutes, a message pops up to notify the user that the phone will power off in ten minutes, and a countdown starts. When it times out, the phone powers off.

  • If any system activity occurs during the countdown — such as an incoming call, firmware upgrade, or provisioning resync — the countdown will restart after the configured timeout period once the activity is complete.

  • If a user interacts with the phone during the countdown period — such as by answering or declining calls, or pressing keys — the phone will remain active and will not enter Deep Sleep Mode for the rest of the day.

Outside Office Hours > Display Off
Display Off Idle Timeout

Default: 5

Options: 1 - 60

Set the timeout period in minutes for the phone to automatically turn off the screen after being awakened during Display Off Mode.

LED Indicator In Display Off Mode

Default: Enabled

Options: Enabled, Disabled

This field is available in the Outside Office Hours section.

This setting determines whether to turn off the Front Arc LED when the phone enters Display Off Mode, both during or outside office hours. By default (Enabled), the Front Arc LED remains illuminated after the phone enters Display Off Mode. When set to disabled, the Front Arc LED is off in Display Off Mode.

Outside Office Hours > Smart Power

Supported only on phones powered by Power over Ethernet (PoE).

DomainDefault: Empty

The smart power domain that the phone belongs to. Max 128 characters.

A security secret is required for the smart power domain. Please contact the Cisco Technical Assistance Center (TAC) to add your secret.

Enabled

Default: False

Options: False, Non-work Day Only, All Days

Enable or disable the smart power feature. By default, smart power is disabled. Set it to Non-work Day Only or All Days as needed to enable this feature.

The setting is effective only when a valid domain and security secret are provided.

Office Hours
Work Days

Default: Monday through Friday

Customize the workdays by selecting the desired days.

During non-workdays, the phone will automatically turn off the screen. By default, workdays are set from Monday to Friday.

This setting also applies to Deep Sleep Mode, if enabled. If you choose to enable Deep Sleep Mode exclusively for non-workdays, the phone will power off during those days. If you enable Deep Sleep Mode for all days, the phone will power off during non-working hours on workdays and throughout non-workdays.

Set working hours for workdays using the Working Hours Start and Working Hours End fields.

Office Hours > Working Hours
Working Hours End

Default: 19:00

Set the end time for working hours using the 24-hour format. Outside of the specified working hours, the phone will automatically turn off the screen, or enter Deep Sleep Mode only when Deep Sleep Enabled is set to All Days.

Examples: 09:00 for 09:00 am; 17:30 for 05:30 pm

Ensure that the interval between the start and end time longer than 60 minutes.

Working Hours Start

Default: 07:00

Set the start time for working hours using the 24-hour format. Outside of the specified working hours, the phone will automatically turn off the screen, or enter Deep Sleep Mode only when Deep Sleep Enabled is set to All Days.

Examples: 09:00 for 09:00 am; 17:30 for 05:30 pm