[Asterisk-Users] Opinions needed on call quality vs network latency

[Michael J. Liberatore]

You cant go by pings.  ICMP traffic is given lowest priority on internet routers, where voip rtp or iax might be given much higher priority.  Plus I have 2 providers, the provider with the 90ms ICMP ping time is way better than the provider with the 15ms ping time.  It depends on so many factors, including their equipment.  I have a continuing problem with the voice dropping out for 1 second or less during a call and both providers have this problem but I haven't been able to figure out where the problem is coming from, inside my network they are on their own lan and the sound is great but using IAX or SIP to connect to teliax or voicepulse has these damn audio dropouts, and I even tried jitter buffer, 2 asterisk boxes, 2 different internet connections one DSL and one cable, and various codecs and a mix and match of all this.  Anyways your best bet is to get a pay as you go account and test....

Mike


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Michaël Gaudette
Sent: Tuesday, February 07, 2006 3:28 PM
To: asterisk-users at lists.digium.com
Subject: [Asterisk-Users] Opinions needed on call quality vs network latency

Hi,

I am checking out the quality at a few vendors, and althought I know it
doesn`t totally reflect call quality I am using ping as a cheap subsitute to
having a real VoIP testing system

The question I have is this one: given that one service gives me a 80ms ping
(pretty consistantly) and another one gives me 30ms (again very
consistently), is this 50ms difference enough to impact perceived call
quality? 

Or will the quality be impossible to differenciate, and I should choose
based on some other criteria? (customer service, price, etc)

The thing is I can`t really see a difference myself, but I am told that my
hearing isn`t that great so I should judge based on that.

While I`m here, might as well ask this: is there a decent call quality
software available that i could use to give me perceived quality metrics?



Mike

_______________________________________________
--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



This E-mail, including any attachments, may be intended solely for 
the personal and confidential use of the sender and recipient(s) named 
above. This message may include advisory, consultative and/or 
deliberative material and, as such, would be privileged and confidential 
and not a public document. Pursuant to 42 CFR, any information in this 
e-mail identifying a former, present, or potential client of Straight & Narrow is confidential. If you have received this e-mail in error, you must not review, transmit, convert to hard copy, copy, use or disseminate this e-mail or any attachments to it and you must delete this message. You are requested to notify the sender by return e-mail.