To Next PageTo Next PageHow to fix Cisco Unified IP Phone unable to obtain IP address?
If your Cisco Unified IP Phone is unable to obtain an IP address, ensure that the network or VLAN to which the phone is connected can access the DHCP server. Also, confirm that the switch port is enabled.
What to do if Cisco IP Phone cannot obtain a DHCP-assigned IP address because of 802.1X?
If your Cisco IP Phone cannot obtain a DHCP-assigned IP address and 802.1X is enabled, verify that you have properly configured the required components. Confirm that the shared secret is configured on the phone and matches the one on the authentication server. If it is not configured, enter it, ensuring it matches the authentication server.
Why is my Cisco IP Phone resetting?
If your Cisco IP Phone is resetting, ensure there are no network disruptions like cable breaks, switch outages, or switch reboots that could cause the phone to lose contact with the Cisco Unified Communications Manager software.
What to do if Cisco IP Phone cannot obtain a DHCP-assigned IP address after a factory reset?
If your Cisco IP Phone cannot obtain a DHCP-assigned IP address because it completed a factory reset while 802.1X was enabled, temporarily disable 802.1X on the switch or move the phone to a network without 802.1X authentication. Once the phone starts normally, access the 802.1X configuration menus and re-enter the shared secret.
General| Model | CP-7942G |
|---|---|
| Type | IP Phone |
| Lines | 2 |
| Protocols | SIP, SCCP |
| Speakerphone | Yes |
| Display | LCD |
| Ethernet Ports | 2 |
| Power over Ethernet | Yes |
| Audio Codecs | G.711, G.729, G.722 |
| Headset Port | Yes |
| Weight | 2.5 lbs |
| Supported Languages | English, Spanish, French |
Provides an overview of the phone's hardware components and features.
Describes security measures to prevent identity theft, data tampering, and stream tampering.
Details options for powering the Cisco Unified IP Phone, including external power and PoE.
Outlines methods for adding phones to the Cisco Unified Communications Manager database.
Provides steps for connecting the phone to the network and power source.
Explains how to configure network settings if DHCP is not used.
Details how to configure security features to protect phone identity and data.
Provides options for viewing and making network settings like IP, DNS, and TFTP.
Offers access to sub-menus for non-network-related settings like Unified CM and SIP configuration.
Provides options for displaying and modifying security settings like CTL File and Trust List.
Lists supported telephony features and their configuration references in Cisco Unified Communications Manager.
Details how to assign speed dials and call-handling features to programmable line buttons.
Describes how to manage softkeys associated with applications supported by the IP phone.
Outlines procedures for adding users to Cisco Unified Communications Manager for phone access.
Explains how to modify XML files and add custom files to the TFTP directory.
Provides guidance on troubleshooting issues preventing the phone from starting up properly.
Helps identify the cause of phone resets related to network or CUCM connection issues.
Offers troubleshooting information for security features, authentication, and encryption.
Provides general advice and solutions for common Cisco Unified IP Phone issues.
Details methods for performing basic resets and factory resets on the Cisco Unified IP Phone.
Details the procedure to identify phone model, protocol, and configure basic settings.
