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Dear sir, We have been using asterisk for 4 years. Now we have got problems which occurs during the attended transfer. But we are not always getting this problem. Sometimes it happens. But now we cannot understand why this is happening? problem is:"Failed to play transfer sound! " The log of asterisk is as like as followings: [Mar 25 17:58:40] DEBUG[23168] chan_sip.c: Invalid SIP

Dear all, Currently I am using asterisk 1.4.23.1. . Over the period of 1 week, the memory in use starts off at 50% and continues to climb until it hits 99%. When memory usage ratio become 50% or more, the quality of calls become extremely noisy. The call quality goes back to being perfect once I reboot the machine, but I was to try and avoid having to reboot the machine every week. the following

Dear all, We have been using asterisk for 4 years. Now we have got problems which occurs during the attended transfer. During attended transfer, sometimes we cannot hear the sound of 'pbx-transfer'. Sometimes we can hear little portion of 'pbx-transfer's sound. That means sound also become noisy. I cannot understand why this is happening? log is : -- Started music on hold,

Dear all, We have been using asterisk for 4 years. Now we have got problems which occurs during the attended transfer, blind transfer and answering machine(during the pressing of 999). During attended transfer and blind transfer , sometimes we cannot hear the sound of 'pbx-transfer'. The same problem occurs during answering machine. I cannot understand why this is happening? log is :

Dear all, We have been using asterisk for 4 years. Now we have got problems which occurs during the attended transfer. During attended transfer, sometimes we cannot hear the sound of 'pbx-transfer'. I cannot understand why this is happening? log is : -- Started music on hold, class 'default', on SIP/113.34.235.13-b7a3f110 -- <SIP/0000185148-092db338> Playing