Expire Time; Rtp Port - Furuno Felcom 250 Service Manual

4.3 Registering the Handset in the SIP Server

3. Expire time

The Expire time is the setting for the Handset authentication expiry time. The default
value is 3600 sec. The value can be set between 1800 to 7200 seconds.
When the time set here has passed, the SIP server cancels the authentication once, and
authenticates the Handset once again.
For example, even if the Handset is disconnected from the LAN port, if the expiry time
has not passed yet, the " " mark which refers to the registered status will be displayed
via Settings -> PBX settings -> Extension screen (Reg.) on the Web MMI.

4. RTP port

Confirm the settings to be RTP port1: 5004 and RTP port2: 5006.
RTP is the abbreviation for "Real-time Transport Protocol". Set an even number
between the range of 1024 to 9998.
For the S/L port, the port number is to control the SIP server and the Handset, but the
port number for the RTP port is one for voice. RTP port 1 and RTP port 2 have two ports
allocated for calling and forwarding purposes.
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