AirLive ePhone-2000S - Manual (Page 20)

AirLive ePhone-2000S English Version -16-
Note 2: If there are several phones reside under the same NAT, their NAT port
mappings must not be overlapped since they all share the same NAT resource!
z Configure SIP service signaling port:『Main Menu』=>『6.Network』/『2.SIP settings』
/『1.SIP service』. Take the scenario above as an example:
1. Transport: 1 (or 3, you must include UDP anyway).
2. SIP port: 10101
z Configure RTP ports by going to 『Main Menu』=>『6.Network』/『3 RTP settings』.
Take the mapped ports as an example:
1. Base: 10102 (Must be an even number and between 3000 and 65532)
2. Range: 6 (Must be an even number and larger than or equal to 4).
Note: RTP ports are used for voice media transmission. Those ports must be
consecutive and start with an even number. Besides, at least 4 ports are needed
for a phone equips with a capacity of two concurrent calls, where each channel
needs 2 ports for RTP/RTCP.
z Assign static NAT IP by going to『Main Menu』=>『6.Network』/『4.NAT & firewall』
/『3.Static NAT IP』 and fill in the acquired NAT IP from network administrator, such
as 210.95.168.1 mentioned above (you may also detect your NAT IP by STUN
from 『Main Menu』=>『6.Network』/『4.NAT & firewall』/ 『1. STUN』/ 『2.
Diagnose NAT』).
Note : if your NAT equipped with no fixed IP, such as those NATs dial into WAN by
PPPoE, then you must synchronize the NAT IP currently set into IP SIP Phone
whenever your NAT IP changed (Such as NAT re-dialup). By default, the
system will auto-detect the NAT IP (if the STUN server configured into
menu-6.4.1.1『STUN server』is viable) and notify you by sending an instant
message whenever it determine a mismatch between the NAT you configured
into menu 6.4.3-『Static NAT IP』and the one it auto-discovered by STUN
protocol. Alternatively, you may go to『Main Menu』=>『6.Network』/『4.NAT
& firewall』/『4.Dynamic NAT IP』and enable『2.Update by STUN』to
auto-refresh the newly changed NAT IP into menu-6.4.3『Static NAT IP』
whenever it detects an inconsistency.
z Enable Assigned static NAT IP by going to 『Main Menu』=>『6.Network』/『4.NAT
& firewall』/『2.UDP traversal』, selecting『2.Static NAT map』and press【HOLD】
to confirm activation.
4. Option-2 Activate STUN
Setting up the NAT router is impossible in many cases, and new equipment may be too
expensive. For these environments, "Simple Traversal of UDP Through NATs" (STUN)
has come to rescue. To enable STUN, you must acquire the IP of your served STUN
server and diagnose your NAT to see if STUN is viable.