Cisco Jabber Phone - Audio being clipped.

[Jay Schulze]

Hello,

So at a loss here. We are troubleshooting an audio issue where words are being clipped. Agents are using jabber 12.1.1. It is very intermittent and effecting almost all. Went through normal procedure and don't see anything on network. Took captures at lots of points including at PC. From PC wireshark cap. Do not hear the issue. However can confirm while listening I do  hear the problem.

My real question is from jabber logs.I can see.

19-06-27 15:26:42,467 DEBUG [0x00002744] [rc\framework\ServicesDispatcher.cpp(220)] [services-dispatcher] [CSFUnified::ServicesDispatcher::executeTask] - executed (Calling TelephonyServiceImpl::onConversationMediaStatisticsChanged from TelephonyAdapter call stats timer thread) in [0] milliseconds. Waiting time was [0] milliseconds
2019-06-27 15:26:42,486 DEBUG [0x000014fc] [PME(0) ] [pme] [<Audio>] - Clipped 8 samples.
2019-06-27 15:26:42,500 DEBUG [0x000014fc] [PME(0) ] [pme] [<Audio>] - Clipped 8 samples.
2019-06-27 15:26:42,510 DEBUG [0x000014fc] [PME(0) ] [pme] [<Audio>] - Clipped 8 samples.
2019-06-27 15:26:42,530 DEBUG [0x000014fc] [PME(0) ] [pme] [<Audio>] - Clipped 7 samples.

Anyone familiar with jabber logs. Does that indicate it has a problem with the rtp stream and basically is skipping to next packet?

From the stats on the call however i see no latency or jitter.

2019-06-27 15:26:42,632 DEBUG [0x000010b4] [urce\cpve\src\main\sessionimpl.cpp(1597)] [cpve] [CSF::media::rtp::SessionImpl::logRtpStatsWithLock] - RTP STATS,session_id=116,session_type=audio-main,rx_bytes_recv=37536,rx_pkts_recv=1173,rx_pkts_lost=0,rx_curr_loss=0.00%,rx_cum_loss=0.00%,rx_bitrate=7996,rx_jitter=0,rx_average_jitter=1.89,rx_concealed_seconds=0.000,rx_severely_concealed_seconds=0.000,rx_skew=0,rx_avg_latency=0.00,rx_fec_pkts_recv=1173,rx_fec_pkts_lost=0,rx_fec_curr_loss=0.00%,rx_fec_cum_loss=0.00%,tx_bytes_sent=37024,tx_pkts_sent=1157,tx_pkts_recv=0,tx_pkts_lost=0,tx_curr_loss=0.00%,tx_cum_loss=0.00%,tx_bitrate=7995,tx_jitter=0,tx_round_trip=0,tx_avg_round_trip=0.00,tx_last_rb_ssrc=00000000,tx_last_ext_high_seq=0,tx_received_rb=0,tx_active_sources=1,tx_total_sources=1
20

[Mohammed al Baqari]

You said that many captures were taken. Ideally you need to capture at each
point in the network between call parties and play the capture in wireshark
to see when the clipping starts. Then you start looking at that point.
Otherwise, you can't troubleshoot audio quality problems.

[Jay Schulze]

Yes there were at different points. But I was stating this is furthest point which is the agent PC. Which don't hear. This was more about the jabber logs I was asking. I found the issue which was resources on PC causing the clipping in processing.

[ShanakaNilusha17406]

Hi,

We are facing something some, what was the PC process that causing the clipping audio?

[chathurangaj@kbsl.lk]

Is it happend in only one PC ?

Ist better if you can check the jabber soft client PC requirement. please
check what are the specs which you need for the jabber version you are
using right now.

Please refer below link it may helpful for you.

https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/jabber/11_8/cjab_b_planning-guide-jabber-118/cjab_b_planning-guide-jabber-118_chapter_01.html#CJAB_RF_O709DBBB_00