Calls Turn into Clicks and Buzzes
Hello-
I'm pretty new to ooma. I have a serious quality problem. In the middle of a call, without warning, a call turns into a harsh buzz, sometimes a raspy clicking noise and it does not recover. If I hang up I don't even get ooma dialtone back for a while. This is a major problem.
I have a 3meg downlink and 1 meg uplink to the net. The ooma hub is connected directly to the cable modem. It should be ok, but it definitely is not ok.
HELP!
I'm pretty new to ooma. I have a serious quality problem. In the middle of a call, without warning, a call turns into a harsh buzz, sometimes a raspy clicking noise and it does not recover. If I hang up I don't even get ooma dialtone back for a while. This is a major problem.
I have a 3meg downlink and 1 meg uplink to the net. The ooma hub is connected directly to the cable modem. It should be ok, but it definitely is not ok.
HELP!
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- Posts:2711
- Joined:Sat May 23, 2009 9:28 am
- Location:Atlanta, GA
Re: Calls Turn into Clicks and Buzzes
Run the test here: http://www.whichvoip.com/voip/speed_test/ppspeed.html, and post the results from the Advanced tab when the test is over. This should be done from your computer connected via Ethernet cable (not wireless) with no calls in progress and no other uploads/downloads going on.
Re: Calls Turn into Clicks and Buzzes
Here are the test results:
VoIP test statistics
--------------------
Jitter: you --> server: 0.5 ms
Jitter: server --> you: 3.7 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 0.2 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 3.9
Speed test statistics
---------------------
Download speed: 2118856 bps
Upload speed: 962736 bps
Download quality of service: 58 %
Upload quality of service: 99 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 82 ms
Average download pause: 7 ms
Minimum round trip time to server: 89 ms
Average round trip time to server: 101 ms
Estimated download bandwidth: 20800000bps
Route concurrency: 9.816618
Download TCP forced idle: 75 %
Maximum route speed: 5890784bps
VoIP test statistics
--------------------
Jitter: you --> server: 0.5 ms
Jitter: server --> you: 3.7 ms
Packet loss: you --> server: 0.0 %
Packet loss: server --> you: 0.2 %
Packet discards: 0.0 %
Packets out of order: 0.0 %
Estimated MOS score: 3.9
Speed test statistics
---------------------
Download speed: 2118856 bps
Upload speed: 962736 bps
Download quality of service: 58 %
Upload quality of service: 99 %
Download test type: socket
Upload test type: socket
Maximum TCP delay: 82 ms
Average download pause: 7 ms
Minimum round trip time to server: 89 ms
Average round trip time to server: 101 ms
Estimated download bandwidth: 20800000bps
Route concurrency: 9.816618
Download TCP forced idle: 75 %
Maximum route speed: 5890784bps
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- Posts:2711
- Joined:Sat May 23, 2009 9:28 am
- Location:Atlanta, GA
Re: Calls Turn into Clicks and Buzzes
The download quality of service is not good. How are the signal levels in your cable modem (http://192.168.100.1/)? What kind of phones are you using?
Re: Calls Turn into Clicks and Buzzes
I'm using panasonic cordless phones. Two base units (one connected to an Oooma Hub, the other a scout). There is also a regular wired phone connected to another scout.
The RF parameters from the modem are:
Downstream
Freq/Power: 105.000 MHz 8 dBmV
Signal to Noise Ratio: 37 dB
Modulation: QAM64
--------------------------------------------------------------------------------
Upstream
Freq/Power: 32.500 MHz 20 dBmV
Channel Type: DOCSIS 1.x (TDMA)
Symbol Rate: 2560 kSym/sec
Modulation: QPSK
Status
System Uptime: 7 days 21h:12m:32s
Computers Detected: 1
CM Status: Docsis-AC Power Iso OFF Data Reg Complete
Time and Date: Not Available
The RF parameters from the modem are:
Downstream
Freq/Power: 105.000 MHz 8 dBmV
Signal to Noise Ratio: 37 dB
Modulation: QAM64
--------------------------------------------------------------------------------
Upstream
Freq/Power: 32.500 MHz 20 dBmV
Channel Type: DOCSIS 1.x (TDMA)
Symbol Rate: 2560 kSym/sec
Modulation: QPSK
Status
System Uptime: 7 days 21h:12m:32s
Computers Detected: 1
CM Status: Docsis-AC Power Iso OFF Data Reg Complete
Time and Date: Not Available
Re: Calls Turn into Clicks and Buzzes
HW and FM versions for the modem:
CM Hardware Information
System: ARRIS DOCSIS 1.1 Touchstone Cable Modem HW_REV: 08
VENDOR: Arris Interactive, L.L.C.
BOOTR: 5.01
SW_REV: 6.0.13
MODEL: CM550A
Product Type: 00000000 01083aa0
Product Release: 00000008
Flash Part: MX29LV160B
Functional Revision: 03
Download Revision: 2
Firmware Revision: 6.0.13
Serial Number: 78HBMLAA7830146
Firmware Build and Revisions
Firmware Name: CM060013_121106_CM550
Firmware Build Time: Mon Dec 11 10:18:34 EST 2006
CM STATE INFO:
CM State: Docsis-AC Power Iso OFF Data Reg Complete
Complete Docsis-Downstream Scanning
Complete Docsis-Downstream Ranging
Complete Docsis-Upstream Ranging
Complete Docsis-DHCP
Complete Docsis-TFTP
Complete Docsis-Data Reg Complete
--- Telephony-DHCP
--- Telephony-TFTP
--- Telephony-Reg with Call Server
--- Telephony-Reg Complete
TOD State:
No Response Received Time of Day
BPI State:
Enabled - Authorized BPI Status
DHCP Attempts to obtain CM IP Address:
215 Attempt(s)
CM Hardware Information
System: ARRIS DOCSIS 1.1 Touchstone Cable Modem HW_REV: 08
VENDOR: Arris Interactive, L.L.C.
BOOTR: 5.01
SW_REV: 6.0.13
MODEL: CM550A
Product Type: 00000000 01083aa0
Product Release: 00000008
Flash Part: MX29LV160B
Functional Revision: 03
Download Revision: 2
Firmware Revision: 6.0.13
Serial Number: 78HBMLAA7830146
Firmware Build and Revisions
Firmware Name: CM060013_121106_CM550
Firmware Build Time: Mon Dec 11 10:18:34 EST 2006
CM STATE INFO:
CM State: Docsis-AC Power Iso OFF Data Reg Complete
Complete Docsis-Downstream Scanning
Complete Docsis-Downstream Ranging
Complete Docsis-Upstream Ranging
Complete Docsis-DHCP
Complete Docsis-TFTP
Complete Docsis-Data Reg Complete
--- Telephony-DHCP
--- Telephony-TFTP
--- Telephony-Reg with Call Server
--- Telephony-Reg Complete
TOD State:
No Response Received Time of Day
BPI State:
Enabled - Authorized BPI Status
DHCP Attempts to obtain CM IP Address:
215 Attempt(s)
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- Posts:2711
- Joined:Sat May 23, 2009 9:28 am
- Location:Atlanta, GA
Re: Calls Turn into Clicks and Buzzes
Your upstream power level of 20 dBmV seems low. Read this FAQ, including the feedback at the bottom: http://www.dslreports.com/faq/3412
Re: Calls Turn into Clicks and Buzzes
There is no "feedback" at the bottom of this faq. The answer suggest a low number is good. Is 20 too low? How would I fix this? Thanks for your helpGroundhound wrote:Your upstream power level of 20 dBmV seems low. Read this FAQ, including the feedback at the bottom: http://www.dslreports.com/faq/3412
Re: Calls Turn into Clicks and Buzzes
The upstream power level is controlled by the cable system head end. They set the upstream power level so that they receive the proper signal strength at their receiver. The fact that your downstream power level is toward the high end of the range tells me that you must be very close to the head end location or you have a bi-directional amplifier installed since that would also result in similar readings.
Customer since January 2009
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx
Telo with 2 Handsets, a Linx, and a Safety Phone
Telo2 with 2 Handsets and a Linx
Re: Calls Turn into Clicks and Buzzes
I have a fiber connection from a box on my house to the head end. From the box it is 15 feet or so of coax to the modem. Does this imply the upstream power needs to be higher?