User manual

3xx series IP Phone
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Escene Communication
39
STUN Server
Session traversal utilities for NAT.
BLA
Share with the line.
BLA Number
BLA Number
Call Method
This method include SIP and TEL.
Subscribe Period
Subscribe expire time.
Register Expire Time
IP phone automatically registered every time
DNS-SRV
Enable/Disable DNS-SRV.
SIP Transport
There are UDP/TCP/TLS three options
Call
Amount Of Line
Account Used
The line key of account used, default is 2
Do Not Disturb Enable/Disable Do Not Disturb
Anonymous Call
Rejection
Enable/Disable anonymous call.
Use Session Timer Enable/Disable refresh session function. The device will send an Invite
packet to refresh the session during a call if it enable.
Session Timer The refresh session time interval.
Allow-events Enable/Disable Allow-events.
Registered NAT Enable/Disable Registered to NAT
Ring Type Set ringing type for current account.
UDP Keep-alive
Message
The phone periodically sends a UDP packet to keep the port active and to
avoid the server to shut down the port
UDP Keep-alive
Interval
Default is 30 second.
Security
SIP Encryption Enable/Disable SIP encryption.
RTP Encryption Enable/Disable RTP encryption.
Encryption Algorithm The encryption algorithm at this time we only have RC4.
Encryption Key The key with encryption.
RTP Port Range The port range with RTP.
Programmable Keys
Memory Keys: You can select the features what you want to. It can help you quickly to dial or
operating. These features include Speed Dial/ Speed Dial Prefix/ DTMF/ BLF/ BLA/ Paging/ Call
Park/ Intercom.