Tag Archives: VoIP

3CX Phone System – Caller ID Incorrect with Call Pickup and Call Transfer using Aastra Handset

When you use an Aastra Handset with 3CX you may find that the correct Caller ID is not shown on the handset when you use Call Pickup or the call is transferred to your phone.  This can be corrected by adding the following line in to your provisioning template for your Aastra handsets

sip update callerid: 1

This setting Enables or disables the updating of the Caller ID information during a call, by default the phone has a value of “0” assigned but by adding this line with the value “1” you force this setting to Enabled.

A Windows Based Computer that is connected to your network via an IP Phone (NAP-Enabled) may not connect to the same VLAN after resume from hibernation

This issue applies to Windows XP – SP3, Windows Vista – SP2, Windows Server 2008 – SP2, Windows Server 2008 R2 – SP1 and Windows 7 – SP1.

This issue occurs on networks that use IEEE 802.1X authentication where the client computer or server machine is connected or bridged via a NAP-Enabled device such as an IP or VoIP Phone Handset.

The issue will not be resolved for Windows XP because it is now outside the mainstream support cycle.  Hotfixes for the other operating systems listed above can be obtain via Microsoft KB 976373 http://support.microsoft.com/kb/976373