How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

Hi guys,

my SIP voice quality is a on the week side. It is not network related.
I tested my SIP account over WLAN with the N900 and with the X-Lite SIP-Software Phone on my Laptop, calling myself at home. The voice quality over my laptop is so much better. I am wondering if this is hard/software related. On the other hand Skype to Skype quality is ok.
How is your SIP quality? Anything I can do to improve quality?

ste

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

Being a VoIP engineer, and having a few different VoIP and SIP solutions setup on the 900, including Vonage, and a SIP solution that routes through an online pbx trunk, I'd say that call quality is fairly good. The problem I do have however is with "call volume'. This could be masking some audio QoS issues.

You may want to check the WiFi "power setting" on your 900 and see if you're using "100mW" vs "10mW"

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

the call is better on n82 compared to n900 ... on both 3G and wifi ... with wifi se to 100mW.

colnago ... i try to find a way to add a "public user name" setting to the n900 sip configuration file ... can you help me??

on my n82 i have this setting ... i use nonoh.net ... when i make a sip-call it sends my mobile phone number (registered with nonoh) as a caller id ... a great thing!

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

Hi,

my wlan is set to 100mW. The problem I have is, that the speech gets somehow distorted (sounds kind of "metallic") and interuppted. I also noted that there is a 4-5 Second delay, compared to a call with my laptop.
Could it be a matter of my provider? Then again I am wondering, why I can call perfectly with my laptop.

Colnago, you are using the built in SIP-client?

ste

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

I don't know what your settings are or what you're trying to accomplish. If you're trying to "add a field" to the native SIP app in the 900, that's way above my pay grade.

If you want to run your SIP service through a PBX trunk, it may add some extra functionality to your SIP service, that the 900's SIP client can not provide.

Check out the instructions here for setting up a trunk on pbxes.org:

http://seethisnowreadthis.com/2009/0...android-phone/

...just ignore the "Android" part. The instructions are mainly for setting up the trunk on pbxes. Then log in to the pbxes account on the 900 with pbxes credentials, after creating an account with them.

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

You may be experiencing this bug which i have here and others...
I get perfect volume in but i send screwed up sound because of a timing setting that the phone won't accept from a server.

Vote! :-)

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

My opinion, im using a lot of JABBER calls and the quality is SUPER HIGH, like a regular cell phone call.
I recommend jabber calls !

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

With which clients have you been getting success ? :)

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

I just voted. It pretty much describes my problem. Also it is as described indeed an asymmetric problem. With the n900 I can here the other person quite good, but not vice versa. Thanks for pointing out the bug report.

Next question: Why are only some persons experiencing this problem? So it has to do something with the provider (or server of provider)?

Re: How is your SIP voice quality? Skype is ok, but SIP is on the week side.
 

From what i understand, (after sending a tcpdump to Oliver who is debugging this) is that in my case, asterisk is asking somewhere for a 20ms delay but farsight is ignoring it and keeping it's default 40ms settings, causing weird things to happen!

Hopefully it's going to be fixed soon, i want to be able to answer my hope PBX anywhere i get WiFi and finally answer that funny question: "But i called you at home!" :P