Which ports do 7900 series IP phones use in the UC solution

Log in to the web page of the IP phone and choose Advanced > Network > VLAN to configure the VLAN. Note: The eSpace 8850 IP phone does not support the VLAN function.

1. On U1900, start the SNTP service. [%eSpace U1930(config)]#start sntpserver The SNTP server has already been started. 2. Log in to the phone web page as an administrator. Choose System > Date and Time, and set the U1900 IP address as the time server address. Set the update interval to an appropriate value based on site requirements. If many devices need to synchronize time with U1900, do not set the update interval to a small value. Frequent time synchronization increases the server load.

For details, see batch configuration using DHCP option 246 in the administrator guide of the 7900 series IP phones.

The eSpace 7900 series IP phones support a voice conference that has at most six parties. Users can add, mute, and delete participants using the phone.

1. Log in to the phone web page as a user and choose Preferences > Contacts. 2. On the My Contacts tab page, click Import. 3. Double-click the contact file to import.