Toshiba Pocket Pc e830 - Manual (Page 143)

Chapter 9: TOSHIBA IP Phone for Pocket PC
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Presence Service (PS)
To show your status to your buddies, tap My State, then either ONLINE,
OFFLINE, BUSY, or AWAY.
Using Gphone Buddy Service behind a NAT router
With Gphone Buddy Service, you can use this application behind a NAT
router. You may have to configure port forwarding at your router regarding
port numbers below in order for this application to receive a call through a
NAT router.
•
Port number to wait for call signaling request
• You can confirm its current value at UDP Port (Signal) by tapping
Tools, then Options.
• Its default value is 28100.
• Port number to receive audio packet, or RTP (Real-time Transport
Protocol) packet
• You can confirm its current value at UDP Port (Voice) by tapping
Tools, then Options.
• Its default value is 29100.
• Port number to receive RTCP (RTP Control Protocol) packet
• RTCP uses the next higher port number than RTP.
• Its default value is 29101 because RTP uses 29100 by default.
When you use several IP phones behind a same NAT router, you may
have to use different port numbers on each PC. For example, if you have
three PCs, terminal A, B, and C behind the same NAT router and each PC
has an IP Phone. In this case, you may need to change the port numbers