Tandberg - Basic - Troubleshooting Video Quality

1. Verify Endpoint model and firmware
2. Verify Call Diagnostics/System Information:

Video:
Check:
- Video Protocol(codec)
- Resolution
- Frame Rate
- Call rate

Audio
Check:
- Audio protocol (codec)
- Audio rate
Check TX/RX Packet loss

Gathering call details:

1. Verify QoS settings and marking from Tandberg Menu

2. Verify IPLR is enabled:
Transmit: Enables/disables Intelligent Packetloss Recovery
usage: iplr

3. Verify call details from Telnet:
xstatus Call 1

*s Call 1 (status=Synced, type=Vtlph, protocol=H323, direction=Incoming, logTag=
9):
     CallRate: 1920
     RemoteNumber: "3006131"
     IncomingNumber: "13302220001"
     IncomingSubAddress: ""
     Mute: Off
     Microphone: On
     Duration: 303
     MuteOutgoing: Off
     CallOnHold: False
     RemoteSiteOnHold: False
     MultiwayProgress: Off
     Channels 1 (type=Incoming):
       Rate: 1920
       Restrict: Off
       IPLR: Off
       Encryption (status=Off): /
       Audio (status=Active):
         Protocol: G722
         Rate: 64
       Video 1 (status=Active):
         Protocol: H264
         Resolution: w720p
         Rate: 1856
       Video 2 (status=Inactive): /
       Data (status=Inactive): /
     Channels 2 (type=Outgoing):
       Rate: 1920
       Restrict: Off
       IPLR: On
       Encryption (status=Off): /
       Audio (status=Active):
         Protocol: G722
         Rate: 64
       Video 1 (status=Active):
         Protocol: H264
         Resolution: w720p
         Rate: 1856
       Video 2 (status=Inactive): /
       Data (status=Inactive): /
*s/end

OK

4. Verify real time statistics:

Enable syslog
syslog on
syslog 3

H323MCS-1 pkts  23703, loss      0, jitter   0, maxjitter   1, drop    0, rate  640 (Audio input)
H323MCS-1 pkts 108081, loss      0, jitter   1, maxjitter   4, drop    0, rate 17140 (Main Video input)
H323MCS-1 pkts      2, loss      0, jitter   0, maxjitter   0, drop    0, rate 0 (Data input)
H323MCS-1 pkts  23703, loss      0, jitter   0, maxjitter   0, drop    0, rate 640 (Audio output)
H323MCS-1 pkts  73652, loss      0, jitter   7, maxjitter   7, drop    0, rate 12690 (Main Video output)
H323MCS-1 pkts     19, loss      0, jitter   0, maxjitter   0, drop    0, rate 0 (Data output)

5.  Enable PacketLossDownSpeed:
xConfiguration PacketlossDownSpeed Mode:

6. Collect sniffer captures



* some commands may vary depending Endpoint model