3CX has released service pack 5 for version 9. This update is mainly a bug fixing update and the last one for 2010. This service pack is available for download from the 3CX Winforms Management console / Service pack updates and will upgrade your 3CXPhone System V9 to build 15536. The update takes between 5-10 minutes once downloaded depending on the machine spec of your 3CX Phone System server. Update is 20Mb in size.
Plug and Play: Plug and Play is only available for Yealink and TipTel phones at the moment. With this feature, creating option 66 in DHCP is no longer needed and you don’t need to know the IP Address of the phone or log in to the phone’s browser.
Note (BETA): 3CX Users that want to register 3CXPhone for Android from an external location can modify a parameter in the custom parameters table of the 3CX Management console (Settings/Advanced/Custom Parameters) “ALLOWSOURCEASOUTBOUND”. Set this to 1 and you will receive 2 way audio upon successful registration. However this might have a negative effect on VoIP Providers so be careful to test this out properly on your environment before.