Call Settings - Grandstream Networks WP820 Administration Manual

Keep Specifies how often the phone will send a Binding Request packet to the SIP server in order to keep the "ping hole"
- on the NAT router to open. The valid range is from 10 to 160. The default setting is 20 seconds.
alive
Inter
val
(s)
STU Specifies the IP address or the Domain name of the STUN (Simple Traversal of UDP for NAT) server. The phone will
N send STUN Binding Request packet to the STUN server to learn the public IP address of its network. STUN resolution
Serv results are displayed on the status page of the phone Web GUI. Only non-symmetric NAT routers work with STUN.
er The default is "stun.ipvideotalk.com".
Use
Configures the IP address for the Contact header and Connection Information in the SIP/SDP message. It should
NAT
ONLY be used if it is required by your ITSP. The default setting is keep the box blank.
IP
Guest Features
Guest Settings
Gues
Enable/disable guest login. Users should configure SIP domain name when using this function. Users should input
t
SIP username and password on LCD.
Logi
Note: A reboot is required for this setting to take effect.
n
Gues
t
When set "Guest Login" option to "Yes" and "Expire" on the guest login page through LCD to "Always", users should
Logi
input the PIN code to login.
n PIN
Code
SIP Domain
Serv
The server alias is used to customize the server name.
er
Alias
Serv
The server list consists of all the domain names or IP addresses of the SIP servers under the selected sever alias.
er
The registration priority of addresses in the list is from top to bottom and supports up to 2 SIP domains per alias.
List

Call Settings

Call Settings
Call Features
Enable Video
Enables the video call feature.
Call
Default Video In a video call, the default area which is displayed after press Zoom. The default value is 0 (full screen).
Zoom Area Range 0-9.
Enable Enable the transfer feature. When "unchecked", the phone will block the TRANSFER key on the LCD
Transfer screen. The default setting is "checked".
Table 17: General Settings