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Vladimir Toncar (Kerio)

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Hi,

Kerio Operator 1.1.1 has been published. This service release solves several issues with SIP providers. It also addresses a few glitches with SIP phones.

SIP provider issues:
- Up to now, Operator used Asterisk's default "User-Agent" string. This is a string in the SIP protocol which identifies the underlying SIP software. A SIP provider in the Netherlands refuses to connect clients who use the default identifier ("Asterisk PBX"). It is now possible to
change the "User-Agent" string but the value "Asterisk PBX" remains as default value for backward compatibility.
- Up to know, Operator used a maximum SIP registration interval of 140 seconds. Some SIP providers like freephonie.net require longer intervals and prefer sending keep-alive packets instead because this approach reduces CPU load on their servers. Operator 1.1.1 sets the maximum allowed interval to 1 hour.
- Added support for German SIP provider QSC. This provider uses a specific method of signalling the called telephone number. The actual called number is in the "To:" field, the INVITE header contains a shortened number that serves just as the customer ID.
- SIP provider configuration was incorrectly generated by Operator if the provider required a non-standard SIP port (i.e. other than 5060). The error was fixed.

SIP telephone issues:
- Grandstream HT286 could not register with the Asterisk version used in Operator 1.1.0 (i.e. Asterisk 1.4.41). We have backported an existing Asterisk patch for this issue.
- Auto-provisioned Polycom phones signaled a new voicemail message with a short beep repeated every 2 minutes. This sound was slightly annoying on some Polycom models, so it was disabled. The signalling only uses the MWI light now.
- Dial patterns generated for auto-provisioned Polycom phones were incorrect when there was not dial-out prefix in the dial plan.

Other bug fixes:
- When integrated with an Active Directory server, the error log sometimes contained messages about directory server communication failures after a reboot. This was caused by attempts to access the directory too soon after the boot. The bug was fixed.
- The integrated TFTP server (used by automatic provisioning) could sometimes crash when using AD integration. The crash occured when there was a race condition between an LDAP communication error and a memory de-allocation sequence.
- Corrected several small translation glitches in Czech, German, and Russian (Administration GUI)
- The administration GUI did not warn when trying to activate a user from the directory server who collided with an existing local user.
- A call loop created by incorrect fallback configuration could cause 100% CPU utilization. The new implementation prevents loops from overloading the CPU.

Happy Operating!

Vladimir Toncar
product development manager for Kerio Operator

[Updated on: Mon, 31 October 2011 15:11]

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