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RTP port
Specify a range of port numbers that are to be used as RTP ports. This range
must be reserved in the LAN (router) for the phone.
Enter the lowest port number in the left-hand field and the highest number in
the right-hand field (numbers between 1024 and 55000).
Size of the port number range:
The difference between the port numbers must be at least 6 if you permit two
simultaneous VoIP calls on your phone. The difference must be at least 4 if you
only permit one VoIP call (
The lower of the port numbers in the range (in the left-hand field) must be an
even number. If you enter an odd number, the next lowest even number is
selected automatically (e.g., if you enter 5003, then 5002 is set automatically).
The default range is 5004 to 5020.
Use random ports = Yes
SIP port
Enter the port number range from which the SIP port is to be dialled.
Enter the lowest port number in the port number range in the left-hand field
and the highest number in the right-hand field (numbers between 1024 and
49152).
This port number range must not overlap with the range specified for RTP port.
The default range is 5060 to 5076.
RTP port
Specify a range of port numbers from which the RTP port is to be dialled.
Enter the lowest port number in the port number range in the left-hand field
and the highest number in the right-hand field.
The default range is 5004 to 5020.
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Select Set to save your settings.
52
¢
option
Allow 1 VoIP call only
on
page
31).
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