[Asterisk-Users] Re: Terrible inbound call quality vs. outbound

[Miguel Ruiz Velasco Sobrino]

I've had similar problems but with dial-up modems.

ISP's mantain large queues in the inbound side of your connection to maximize download
speed, but that same hurts latency on your side. You may be saturating the BW and thus
the queue makes it's job.
Use the bw conditioner that is described in the advanced linux routing howto, in the
cookbook, that is named a thing like "the ultimate bw conditioner, fast downloads and
uploads and blablabla". Modify it by putting the ports that the RTP or IAX stream pases,
assigning them with a filter to the interactive class.
Also don't forget to put the correct uplink and downlink values, or you will be putting a
bw restrictor.

The thing that is very weird is that only inbound calls are affected, I would think that
both inbound and outbound calls were affected.

--- asterisk-users-request at lists.digium.com wrote:

Hi. I'm having a terrible time with call quality coming into my * box.

I'm using VoicePulse over a 1.5/1.5 mbit line. Outbound calls are 
crystal clear on both the RX/TX sides of the conversation. Inbound 
calls, though, are HORRIBLY garbled on the RX side. I can barely hear 
the caller, but they report my quality is fine. Getting loads of 
garbled sounds and weird echoes. (Could just be jumbled up voice 
packets?)


Miguel Ruiz Velasco


		
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