Grandstream Networks GXP2140 User Manual

FIRMWARE VERSION 1.0.0.17 GXP2140/GXP2160 USER MANUAL Page 54 of 79
Settings -> General Settings
Local RTP Port
This parameter defines the local RTP port used to listen and transmit. It
is the base RTP port for channel 0. When configured, channel 0 will use
this port _value for RTP; channel 1 will use port_value+2 for RTP. Local
RTP port ranges from 1024 to 65400 and must be even. The default
value is 5004.
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"
(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 in order to keep the "ping hole" on the NAT router to open. The
default setting is 20 seconds.
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.
Public Mode
Configures to turn on/off public mode for hot desking feature on the
phone. If set to "Yes", users would need fill in the SIP Server address for
account 1 as well. Then reboot the phone. When the phone boots up,
users will need enter SIP User ID and Password on the LCD to login and
use the phone.
Note:
When the phone is in public mode login screen, press CONF button will
have the IP address of the phone displayed.
Settings -> Call Features
Off-hook Auto Dial
Configures a User ID/extension to dial automatically when the phone is
off hook. The phone will use the first account to dial out. The default
setting is "No".
Off-hook Timeout
If configured, when the phone is on hook, it will go off hook after the
timeout (in seconds). The default value is 30 seconds.
Intercom User ID
Configures the intercom extension number for account 1 to dial out. This
User ID is mapped to the INTERCOM button on the phone.
Disable Call Waiting
Disables the call waiting feature. The default setting is "No".
Disable Call Waiting Tone
Disables the call waiting tone when call waiting is on. The default setting

Grandstream Networks GXP2140 Specifications

General

Brand	Grandstream Networks
Model	GXP2140
Category	IP Phone
Language	English