User manual

ATL Berkshire 5000 User Manual, Release 2.2.1
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5. WORKING WITH NAT (STUN)
If the phone is connected to a private network behind NAT (Network Address Translation)
device, it will not be able to call the phones on the public network. To overcome this problem,
various NAT traversal technologies are developed. Currently, the ATL Berkshire 5000 supports
the STUN approach.
5.1 STUN
Before STUN can be used to call the phones on the public network, a public STUN server must
be available for connection. After a STUN server is identified for use, follow these steps to enable
STUN:
1. Press the “Menu / Delete” button to enter the phone menu.
2. Scroll down and enter “Settings”.
4 > S e t t ings ↑
5 S w i t ch User ↓
3. Scroll down and enter “Network”.
2 > N e t work ↑
3 U s e r ↓
4. Scroll down and enter “STUN”.
5 > S T U N ↑
6
M
A C A d d r e s s
5. Scroll down and select “Server Address”.
2 > S e r v e r A d d r e s s ↑
3 S e r v e r P o r t ↓
6. Input the hostname or IP address of STUN Server.
S e r v e r A d d r e s s
H
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