Marcus Hall

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====== Setup Ringcentral Sip Phone usint X-Lite ======

| RingCentral   | X-Lite | Setting |
| Sip Domain  | Domain | sip.ringcentral.com:5060 |
| Outbound Proxy  | Proxy | sip10.ringcentral.com:5090 |
| User Name | Userid | |
| User Name | Display Name | |
| Password | Password |
| Authorization ID | Authorization name |


====== Recognizing and Categorizing Symptoms of Voice Quality Problems ======

From: http://www.cisco.com/en/US/tech/tk652/tk698/technologies_white_paper09186a00801545e4.shtml

    Introduction
    High Level Troubleshooting Procedure
    Categorize and Define the Symptoms
    Sample Sound Recordings
    Noise
    Voice Distortion
       Echoed Voice
       Garbled Voice
       Volume Distortion
    Common Problems Hearing Sound Files
    Cisco Support Community - Featured Conversations
    Related Information 

====== why is the audio/video quality poor in one direction ======

From: http://www.cisco.com/en/US/docs/telepresence/infrastructure/articles/cisco_telepresence_packet_loss_poor_quality_audio_visual_one_direction_kb_82.shtml

  * If you are seeing a lot of packet loss in one direction, this could be caused by a duplex mismatch somewhere in your network.
  * If you are new to video conferencing over IP, you may have had a duplex mismatch in your network for some time: TCP traffic will be slowed down by it - and this may pass unnoticed - but UDP traffic will be lost.

====== Monitor ======

From: http://msdn.microsoft.com/en-us/library/aa259670(v=sql.80).aspx

  * In Control Panel, open Administrative Tools, and then open Performance. 
  * In the Windows Performance tool, expand Performance Logs and Alerts, right-click Counter Logs, and then click New Log Settings

From: http://social.technet.microsoft.com/Forums/en-US/winserverPN/thread/35f79821-7ab5-4335-89d5-cec58fa31d33/

  If you want to monitor the amount of UDP packet loss you are experiencing I would use the performance logs and alerts utility.  The counter I
  believe you would be interested in is under the UDP performance object, counter being "Datagrams Received Errors".  Also, you can query any
  of these counters via WMI.


====== Testing Soak Testing ======

From: http://www.loadtest.com.au/types_of_tests/soak_tests.htm

Network testing

    Soak testing is running a system at high levels of load for prolonged periods of time. 
    A soak test would normally execute several times more transactions in an entire day (or night)
    than would be expected in a busy day, to identify any performance problems that appear after a
    large number of transactions have been executed.

====== Packet Loss Testing ======

From: http://packetloss.sourceforge.net/

    Packetloss is a set of programs to detect packet losses in UDP and TCP between two hosts. It does
    this by sending a continuous stream of packets, and detects any delay or loss in the streams. It is useful to measure the impact of failover tests


====== Detecting IP Packet Loss for UberNerds ======

From: http://www.onsip.com/blog/2007/10/25/detecting-ip-packet-loss-ubernerds

   Now you might think someone would have a hard time hearing a 1/50 second gap in a 3 minute conversation.
   And you would be right. But if there is an IP network in the middle of the conversation, it turns out that
   drop detection depends greatly on the the piece of IP phone hardware/software one is talking on. In this case,
   the Polycom IP phone on my desk was useless as an empirical tool in helping me track down the 0.05% packet loss
   in question - I simply could not hear it. However, the Grandstream GXP-2000 (version 1.1.0.14) we have in our 
   test bed turned out to be an invaluable tool since it has the uncanny ability to turn the 1/50 second gap caused
   by a single lost packet into a multi-second garbled mess. So, if like me, you enjoy testing for dropped packets,
   I highly recommend adding the Grandstream to your toolbox - it is a great tool and worth far more than the retail price.