User manual

2xx Series IP Phone
www.escene.cn/en/
Escene Communication
33
NAT Traversal Defines the STUN server will be active or not
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.
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