Hi, Rich Adamson wrote:
I am beginning to wonder whether what echo IS heard is being caused by packetisation delays "in the network" - The default tap length is 128, or I believe 16ms. If something in the PSTN causes a delay more than that length (no idea what might cause that) then echo would still be heard.
We have found that a relatively innocent change by the local incumbent operator has forced us to modify our pstn gateways to change from 128 taps to 256 taps. Since th
Does anyone have any experience in this area? Any ideas? How "heavy handed" would it be to increase the tap length to 256? I have not seen anyone suggest that this might be a good idea.
There have been a few issues especially related to the echotraining section (which can go boo-boo on E1 lines because the audio path is not always entirely complete when zaptel expects it to). If you make sure you are on recent zaptel EC standards you can up to 256 taps. There will be a minor residue that needs work, but it will allow a lot of room to decrease the loss-plan you may be using now.
Florian. _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- Asterisk-Users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
