Jean-Michel Hiver wrote:
I was wondering what could be pros and cons of ztdummy vs proper timer device (i.e. X100P).
I am going to set up an asterisk server in europe (to do trunking, to save bandwith) and I was wondering if it'll be OK to get it going with ztdummy.
Furthermore, I have only a 1024/256kbps PPPOE DSL link and I need to squeeze 12 channels through, I was wondering which codec would be suitable for this? Is g.729a going to be indispensable or can I get away with something like GSM?
Cheers, Jean-Michel.
Jean-Michel,
Ztdummy can be okay, but true hardware timing WILL be better. But, as Rich pointed out, that 256kbps ADSL is probably going to hurt:
256 - 41 = 215kbps usable bandwidth (%16 PPPoE overhead)
IAX2 trunking with g729: 40kbps
each add. call: - 10kbps
So, 215 - 40 - 110 = 65kbps
You only have about 65kbps to spare, and all of this is based on ideal (theoritical) conditions. I doubt that those 12 calls will sound okay, or even work at all...
But, you can always try!
-- Kristian Kielhofner _______________________________________________ Asterisk-Users mailing list Asterisk-Users@lists.digium.com http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
