Gigaset C530 ip User Manual page 137

Customer Service & Assistance
To change the SIP and RTP port numbers on your VoIP phone, proceed as follows:
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Connect your PC's browser to the Web configurator of the phone and log in.
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Open the web page Settings
settings for the SIP and RTP ports (
To help you remember the new port numbers (e.g. for router configuration), you can choose
port numbers that are very similar to the standard settings, e.g.:
SIP port
RTP port
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Save the changes on your phone.
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Wait for the active VoIP connections to be re-registered. To do so, switch to the web page
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Settings Telephony
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Check to see whether the problem persists. If it does, perform step 2.
2. Setting port forwarding on the router
To ensure that your specified SIP and RTP port numbers are used on the WAN interface with the
public IP address, you must define port forwarding rules for the SIP and RTP ports on the router.
To define port forwarding on the router, proceed as follows:
The terms used below may vary from router to router.
To release a port, you must enter the following details (example):
Protocol Public port
UDP 49060
UDP 49004 – 49010
Protocol
Enter UDP as the protocol to be used.
Public port
Port number/port number range on the WAN interface
Local port
The SIP and RTP port numbers set on the phone.
In the new firmware version for Gigaset VoIP telephones, you can set a RTP port range. You
must then also define corresponding port forwarding for this range.
Local host (IP)
Local IP address of your phone in the LAN. You can see the phone's current IP address in the
handset display by pressing the paging key on the base.
To enable the router to perform this port forwarding, the DHCP settings of the router must
ensure that the phone is always assigned the same local IP address, i.e. the DHCP does not
change the IP address assigned to the phone during operation. Alternatively, you can assign a
fixed (static) IP address to the phone. However, you must ensure that this IP address is not within
the address range reserved for DHCP and is not assigned to any other LAN participant.
136
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Telephony
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49060
49004 to 49010
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Connections to see the Status of your VoIP connections.
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Advanced VoIP Settings and change the
page 126).
instead of 5060
instead of 5004 to 5010
Local port
49060
49004 – 49010
Local host (IP)
192.168.2.10
192.168.2.10
for SIP
for RTP