Polycom 1725-16828-001 ユーザーズマニュアル

Deployment Guide for the Polycom VVX 1500 C 

4 - 2

The line icon shows an 
unregistered line icon.

The phone line is unregistered.

Contact your system administrator.

Pressing the Conferencing soft 
key or the CONF key does set up 
a conference in all 
circumstances.

Cicso ad-hoc conferecning is not 
supported. 

Contact your system administrator.

The time and date are flashing.

You have disconnected your 
phone from the network/LAN or 
there is no SNTP server 
configured.

Do one of the following:

Reconnect your phone to the network.

Disable the time and date display on 
the phone per the instructions below.

Press the Menu key, and then select 
Settings > Basic > Preferences > 
Time & Date.

The Time & Date screen displays.

Scroll to Disable, and then press 
Select soft key.

Press the Menu key again to return to 
the idle screen.

The idle screen no longer displays the 
time and date.

You want to upgrade the 
Polycom VVX 1500 C.

You must perform additional steps before 
rebooting the phone to download the new 
SIP software. Refer to “Technical 
Bulletin 53522: Upgrading the Polycom 
VVX 1500 Phone to SIP 3.2.2” at 

 .