User Guide

GRP26XX Administration Guide
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Use Random Port
When set to “Yes”, this parameter will force random generation of both the
local SIP and RTP ports. This is usually necessary when multiple phones
are behind the same full cone NAT. The default setting is “Yes”
Note: This parameter must be set to “No” for Direct IP Calling to work.
Keep-alive Interval
Specifies how often the phone sends a blank UDP packet to the SIP server
to keep the “ping hole” on the NAT router to open. The default setting is 20
seconds. The valid range is from 10 to 160.
Use NAT IP
The NAT IP address used in SIP/SDP messages. This field is blank at the
default settings. It should ONLY be used if it’s required by your ITSP.
STUN Server
The IP address or Domain name of the STUN server. STUN resolution
results are displayed in the STATUS page of the Web GUI.
Only non-symmetric NAT routers work with STUN.
Delay Registration
Configures specific time that the account will be registered after booting up.
Test Password
Strength
Only allow password with these constraints to ensure better security:
The password has to be more than 9 characters/digits and has to fulfill at
least 3 options among 4 options below:
1) Numeric (0-9)
2) Capital letters (A-Z)
3) Lower case (a-z)
4) Special characters (!, @, #, $, %, ^, &, *, (, ), etc)
Default setting is “No”.
Public Mode
Enable Public Mode
Configures to turn on/off the public mode for hot desking feature. The default
setting is “No”.
Enable Fix for RTP
Timestamp Jump
Makes RTP timestamps be continuous, if there is audio loss caused by
timestamp jump. Default is “No”
Public Mode
Username Prefix
Used as prefix of public mode login, when public mode is enabled
Public Mode
Username Suffix
Used as suffix of user name in public mode login, when public mode is
enabled.
Enable Remote
Synchronization
Enables phone to automatically download current account's setting from
remote server and upload to the server.
Server Type
Allows users to choose the type of the server (TFTP, FTP or HTTP) that
stores personal files of public account. Default is “TFTP”
Server Path
Defines server path that stores personal files of public account.
FTP/HTTP User Name
Specifies User Name to access FTP/HTTP server.
FTP/HTTP Password
Specifies Password to access FTP/HTTP server.