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5055 SIP Phone User Guide (Rev. A)
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Making Calls
With the 5055 SIP Phone you can dial:
• by number (user number, telephone number).
• by name (user name).
• by URL (SIP URL address, SIP IP address).
Note: To dial a regular telephone number, you must have a SIP Service Provider that
provides access to the regular (PSTN) phone network.
When the connection is successful, the address of your party is displayed (truncated to 14
characters), and a counter starts at the top right of the display. If the line is busy, the display
shows “BUSY HERE”.
To end or abort a call:
• All modes:
− Press the Cancel key or the Hangup softkey to get a new dial tone.
− Press the Line key associated with the call to return to the default display.
• Handset mode only:
− Put the handset back in its cradle.
• Handsfree mode only:
− Press the Speaker key. This returns you to the default display.
Dialing by Number
To dial by number:
1. Get a dial tone:
• Handset mode: lift the handset.
• Headset mode, press a Line key. You can also start entering a number after pressing
the Headset key (you won’t get a dial tone).
• Handsfree mode: press the Speaker key or press a Line key. You can also start
entering a number after pressing the Speaker key (you won’t get a dial tone).
This selects the first free line (Line 1 if all lines are free). To select another line, press the
associated Line key. The light of the selected Line key turns red. In handsfree mode, the
Microphone key light turns red; in headset mode, and the Headset key light turns red.
2. Enter the number of the party you want to reach using the keypad. 5055 SIP. Phones that
are connected to 3050 ICPs, can use abbreviated two or three-digit numbers to reach
other 3050 ICP attached phones, or regular 7-digit numbers to reach phones on the
PSTN. Check with your phone system installer to learn if your system supports these
options.
• If you mistype a number, press the <−−− softkey to delete it, and re-enter the correct
number.
• To delete all characters entered and enter a different number, press the Cancel
softkey.
3. Press the Dial softkey. The number you entered is dialed, and the light of the selected
Line key turns green.