Citel has recently released new firmware which corrects several issues with the C4110 SIP/IAX Phone.
You can download the latest firmware below. NOTE: the file is a .z file which will directly load to the phone; you don’t need to unzip it.
Amongst the issues corrected in this firmware release are:
- Daylight saving time now works properly for SNTP settings. The default dates are now correct for the USA.
- Improved DTMF
- Config download via FTP/HTTP now working on the AUTO PROVISION interface.
The Citel C4110 supports both SIP and IAX2 protocol, and is now shipping at VoIPSupply.com