Severe voice quality issue calling to China

This forum includes tips for maintaining the best audio quality possible with the Ooma System. If your Ooma system is having issues with dropped calls, static audio or echo, look here for assistance.
billlawton
Posts: 16
Joined: Mon Mar 08, 2010 7:35 pm

Severe voice quality issue calling to China

Post by billlawton » Mon Mar 08, 2010 8:21 pm

Recently dialed to conference call based in China. While the initial greeting was fine, the passcode was usually rejected (3 out of 4 tries). Once I finally connected, the quality of the conference call was intolerable.

Not sure if anything can be done on my side. I don't typically have problems for domestic calls (local or long distance) so I was surprised to have such poor connection. My configuration puts Telo between my cable modem and router (DIR-655) and I typically measure 8 Mbps down and 4 Mbps up.

Shawn
Posts: 92
Joined: Fri Mar 05, 2010 7:59 am

Re: Severe voice quality issue calling to China

Post by Shawn » Sun Mar 14, 2010 10:06 am

Was the international part of the call also through Ooma or some other provider like a phone card?
Have you made subsequent calls to other numbers in China besides the conference center, with the same bad sound quality?

billlawton
Posts: 16
Joined: Mon Mar 08, 2010 7:35 pm

Re: Severe voice quality issue calling to China

Post by billlawton » Sun Mar 14, 2010 12:05 pm

This was my first international call attempt (to China or otherwise). I used Ooma directly (via International bundle) in the first attempt.

Since this initial failed attempt, I did access the same China conf call number, but through a Verizon international phone card. While using the phone card, the call quality was fine through a 2 hour call.

I believe the option of using the phone card results in a VoIP to POTS exchange in US versus China without the card. I really would like to not have to use the calling card. Cost isn't the issue, just the convenience. I haven't tried any other international calls (excluding Canada).

Shawn
Posts: 92
Joined: Fri Mar 05, 2010 7:59 am

Re: Severe voice quality issue calling to China

Post by Shawn » Sun Mar 14, 2010 4:30 pm

I think you should try to use the direct Ooma international service to China again. It could be just a bad day when you had the bad experience.
Last edited by Shawn on Mon Mar 22, 2010 8:26 am, edited 1 time in total.

billlawton
Posts: 16
Joined: Mon Mar 08, 2010 7:35 pm

Re: Severe voice quality issue calling to China

Post by billlawton » Sun Mar 21, 2010 6:24 pm

I may, but I haven't yet.

When I try pingtest.net to a server in China, I get about 500 msec latency and about 200 msec jitter (not sure if this is representative servers Ooma has for China). These don't appear favorable for VoIP. Does anyone else have experience with VoIP QoS with this type of server response?

Shawn
Posts: 92
Joined: Fri Mar 05, 2010 7:59 am

Re: Severe voice quality issue calling to China

Post by Shawn » Mon Mar 22, 2010 7:40 am

This may not be a good indicator. I assume when you make a Ooma call to China, you go through the network Ooma uses. So your ping and jitter values on your own to the Chinese server may not mean much.

billlawton
Posts: 16
Joined: Mon Mar 08, 2010 7:35 pm

Re: Severe voice quality issue calling to China

Post by billlawton » Mon Mar 29, 2010 6:49 pm

Tried again tonight, but still no luck (now updated to ver. 1.35452).

Didn't make it into the conference call - DTMF passcode for call rejected twice. Used same fallback (Verizon International calling card) and it worked fine including many more DTMF digits.

Perhaps it will work when all servers (state-side and international) are updated for Pure Voice. Anyone know of how to check when and where ooma server upgrades are complete?

Ein
Posts: 10
Joined: Sun Apr 04, 2010 8:00 pm

Re: Severe voice quality issue calling to China

Post by Ein » Sun Apr 04, 2010 8:21 pm

I got the Ooma for my parents few days ago. I was worried about the VQ of international calls.

I don't what part of China you are calling to? My Mom made a 50+ minutes call to Guangzhou with no problem. But, it's only one call so far. She will try HK in a few days and see how that works.

The international calling rate is a bit higher than the advertised price.

Canada is 0.016 instead of 0.014 and China is 0.029 instead of 0.025

murphy
Posts: 7165
Joined: Tue Jan 27, 2009 12:49 pm
Location: Pennsylvania

Re: Severe voice quality issue calling to China

Post by murphy » Mon Apr 05, 2010 3:07 am

The advertised rates do not include the fixed call set up charge or the FCC mandated tax currently at 14.1%.
Customer since January 2009
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx

billlawton
Posts: 16
Joined: Mon Mar 08, 2010 7:35 pm

Re: Severe voice quality issue calling to China

Post by billlawton » Mon Apr 05, 2010 5:34 pm

Unfortunately I can't tell exactly where I'm calling since it's a conference call number. The company I'm contacting through the conference system is in Beijing so it may be somewhere nearby.

Would be nice if there was some method to test the reliability of the connection of the Ooma servers remotely and quantitatively.

Post Reply