Configure CP-8831G IP Phones in Daisy Chain Mode

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Updated:July 5, 2018
Document ID:200888

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    Introduction

    This document describes how to connect two or more CP-8831G IP Phones in a daisy chain format.

    Prerequisites

    Requirements

    There are no specific requirements for this document.

    Components Used

    The information in this document is based on these software and hardware versions:

    • Cisco Power Cube 3 - This power cube uses a standard Cisco Unified IP Phone power pupply for non-Power over Ethernet (PoE) deployments. It is required to daisy chain two units together.
    • Daisy chain cable - Daisy chain cable (18 ft).
    • IP Phone model - CP-8831-3PD-K9=, CP-8831-3PD-EU-K9=, CP-8831-3PD-J-K9=, CP-8831-3PD-LA-K9=, and so on.

    The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command.

    Background Information

    A daisy chain is a back-to-back connection of two 8831 conference phones for expanded room coverage. Such a deployment is useful in large boardrooms.

    Note: In CallManager, only the primary phone needs to be configured and it should be registered. However, the secondary phone is not added to CallManager.

    Daisy chain works only with an external power supply. Ensure that the PoE on the interface for the IP Phone is disabled.

    Configuration on the Switch to Disable POE

    >interface GigabitEthernet1/0/6
     switchport mode access
     switchport voice vlan 409
     power inline never  <<------
     speed 100
     spanning-tree portfast
    End

    Configure

    This procedure needs to be followed in order to establish a daisy chain connection.

    Equipment Images for Daisy Chain Setup

    Daisy Chain Cable

    External Power Adaptor

    Cabling at Primary Phone

    Cabling at Secondary Phone

    Verify

    There is currently no verification procedure available for this configuration.

    Troubleshoot

    There is currently no specific troubleshooting information available for this configuration.

    TAC Authored

    Contributed by Cisco Engineers

    • Mohd Saihfee Shamsi
      Cisco TAC Engineer

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