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Appendix F — Frequently Asked Questions
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How do I find out the IP address of my 5055 SIP Phone?
1. Press the Menu key.
2. Press the Line 1 key. The phone’s IP and MAC address are displayed.
What version of boot and main firmware is currently installed on
my phone?
1. Press the Menu key.
2. Press the Line 2 key. The Main and Boot software versions are displayed.
What languages are currently available for my 5055 SIP Phone?
As of release 2.0:
• North American English
• North American French
• Latin American Spanish
You can select the display language using the User Configuration web page, or with the
softkey menu system (Phone Settings).
Why does my phone show *NO REG*?
This message indicates that your phone has failed to register with a SIP registration server.
Connection to a SIP registration server is necessary for your phone to be able to make and
receive SIP calls.
For registration to be successful:
1. The SIP registration Server must be up and running.
2. You must have correctly entered the SIP Registration Server’s URL (provided to you
by your SIP service provider) in the SIP Registry Server field of the SIP
Configuration Page.
3. If you SIP registration server is located on the Internet, then you must have a working
connection to the Internet.
You must have correctly entered the SIP Authentication user name and password (provided
to you by your SIP service provider) in the corresponding fields of the
4. User Configuration Page.