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

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

Sorry for the dumb question but where do you check the wifi power setting? im a very basic user

Cheers

Marty

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

I have made Skype and SIP calls over 3G on my N900 and calls are FANTASTIC. Same call quality as regular GSM mobile.

I am super impressed. My N95 couldn't handle SIP.

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

> Settings > Internet Connections > Connections >(your WiFi connection) > Edit > (hit "Next" 3x until you get to the "Advanced" button) > "Advanced" button > "Other" tab

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

im guessing 100 is the better option?

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

That depends...if you want a better connection, yes.

If you want to save battery, because you're very close to the router, 10mW is better.

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

In that settings area mentioned previosly, there is an option to change power saving, do you know exactly what that does, and how much difference it makes to performance v battery life?

Cheers

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

Are there multiple choices in protocols that N900 can use to stream the audio with SIP calls? Don't know much about those, but I do know that SIP as a protocol has nothing to do with this.

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

thanks for the answer. i'll give pbx a try .... but what i need it something that should be easy. the sip application should send a caller id .... that goes through the sip server to the receiver f the call.

on my n82 and on other nokia phones (n95 for eg) ... in sip settings there is a field "public user name" .... here if i add "sip:+mymobile_no@nonoh.net" (i use nonoh) , when i make a sip call, the receiver of my call sees my mobile phone # .... not some strange no .... or private call ....

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

Hmmmm I login to my account on my SIP providers web site and config that there, not on my N900.

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

what sip provider are you using?
i use nonoh.net

there are some general account settings ... i register my mobile phone # ... but it won't forward the caller id # by default ... it needs to be sent by the sip application

with this "public user name" filled ... there id # is sent
otherwise ... the recever sees "private call" or same strange # or a call center #

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

No clients needed !
Jabber is out of the box in the N900, like skype. :)

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

I'm having the same problems , tried calling another skype account I made to test. the account that is calling has decent audio, the one being called very bad audio.
tested using the n900, a computer, two different wifi's and the 3g connection. Tested all the different combinations (including callign with computer to n900 and calling with n900 to computer); problem is very structural. I'm hoping it can be solved soon.

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

I've tested SIP (not skype, true SIP) many times on N900, and sound was incredibly good, better than on a real phone with a linksys ATA adapter. And my wifi is set to 10mW, not 100.

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

it seems the reported bug is phone dependant? will a reflash solve the problem?

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

The problems I faced with some VOIP providers were mainly a huge delay, 4 to 5 seconds, but with skype that doens't happen, although the rates are not the best, the quality is.

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

Meh, I'd say its carrier/provider/infrastructure dependent. VoIP quality suffers, and is not recommended on circuits where latency starts reaching 125-150ms. Speed tests via speakeasy.speedtest.net reach that alone, without adding the additional hops going thru SIP provider's authentication, proxies, pbxs, and trunks.

Even the encryption on your local WiFi will add overhead, depending on your router's ability/processing power.

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

hehe i meant on the PC side? Empathy? :-)

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

ik ran the speakeasy.speedtest.net diagnostic on the n900 (3g, tmobile, server:amsterdam) result were ping 150, dl 0.66Mb/s, ul0.35Mb/s)

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

Could you please inform me about setting for SIP provider like Nonoh.net, whatever I tried with my Nokia N900 I could get call at all
Thanks