ATL Telecom IP300S - Manual (Page 20)

IP SIP Phone v2 User’s Guide Mar. 2005
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Alternatively, you mayo to 『Main Menu』=>”6.Network” / ”2.SIP settings” / ”1.1
st
Realm”
to configure these information by keypad.
i. If you have applied for more than one service domains, please repeat step I and II
until all active domains are properly configured. IP SIP Phone supports three
different service domains at most.
ii. After saving the configuration, the system will try to register to those activated SIP
domains. The flashing green LED of 【Registration】 key indicates that the
registration is undergoing. Once the green LED stops flashing, you could know the
registration result by the LED. Please refer to section-10.11 “Registration on
Demand” and section-10.12 “Multi-domain Registration” on this user’s guide for
detail.
iii. If you failed to register your phone to SIP registrar, please refer to Appendix
B-“Trouble Shooting” on this document.
4.1.3. Configure NAT and Firewall
If your SIP server locates on public internet, whereas your phone resides on a local area