Gigaset N510 IP PRO Manual page 114

Customer Service & Assistance
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.
In this case, you must 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 button 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) ID 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 subscriber.
114
Local port Local host (IP)
49060 192.168.2.10
49004–49010 192.168.2.10
for SIP
for RTP