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V2.3.1
Date:2013-08-01
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1. Fixed quickly pressing redial will not send cancel message problem
2. Fixed dial plan settings digits over 7 length problem.
3. Fixed VPN connection problem
4. Improve the audio preference, AGC COM is changed to -10dB.
5. Fixed two ringback tone alert problems.
6. Fixed dialplan IP calling replace rule to be effective even if the account is not registered.
7. Fixed continue sending register request when receiving 500 server internal error response.
8. Support option66 auto provision.
9. Support multi-language.