remote viciphone user multiple logouts

[perlmutr]

when i look at a users stats I am seeing on a daily basis anywhere up to 40 logouts. Are we just suffering 'normal' internet errors or are there any settings I can change which would reduce this. At some times I only have 1 agent logged on and when this occurs it can also result in a dropped call. I appreciate any suggestions.

Agent Login and Logout Time: HELP [DOWNLOAD]
EVENT DATE CAMPAIGN GROUP SESSION
HOURS:MM:SS SERVER PHONE COMPUTER PHONE
LOGIN PHONE IP
LOGOUT 2023-05-26 10:15:03 INSFRONT
LOGOUT 2023-05-26 10:15:51 INSFRONT
LOGOUT 2023-05-26 10:36:17 INSFRONT
LOGOUT 2023-05-26 11:35:06 INSFRONT
LOGOUT 2023-05-26 11:39:40 INSFRONT
LOGOUT 2023-05-26 11:40:28 INSFRONT

The message file at the time shows:
[May 26 10:15:03] VERBOSE[9175][C-00000000] chan_dahdi.c: Hungup 'DAHDI/pseudo-698398550'
[May 26 10:15:03] VERBOSE[9175][C-00000000] pbx.c: Spawn extension (default, 8600051, 1) exited non-zero on 'SIP/251-00000000'
[May 26 10:15:03] VERBOSE[9175][C-00000000] pbx.c: Executing [h@default:1] AGI("SIP/251-00000000", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----16--------------------SIP 200 OK)") in new stack
[May 26 10:15:03] VERBOSE[9175][C-00000000] res_agi.c: <SIP/251-00000000>AGI Script agi://127.0.0.1:4577/call_log--HVcauses ... -------SIP 200 OK) completed, returning 0
[May 26 10:15:03] VERBOSE[12023] manager.c: Manager 'sendcron' logged on from 127.0.0.1
[May 26 10:15:03] NOTICE[12023] manager.c: Request to hangup non-existent channel: SIP/251-00000000
[May 26 10:15:03] VERBOSE[12024] manager.c: Manager 'sendcron' logged on from 127.0.0.1
[May 26 10:15:03] VERBOSE[12025] dial.c: Called 55558600051@default
[May 26 10:15:03] VERBOSE[12026][C-0000009d] pbx.c: Executing [55558600051@default:1] MeetMeAdmin("Local/55558600051@default-00000052;2", "8600051,K") in new stack
[May 26 10:15:03] WARNING[12026][C-0000009d] app_meetme.c: Conference number '8600051' not found!
[May 26 10:15:03] VERBOSE[12026][C-0000009d] pbx.c: Executing [55558600051@default:2] Hangup("Local/55558600051@default-00000052;2", "") in new stack
[May 26 10:15:03] VERBOSE[12026][C-0000009d] pbx.c: Spawn extension (default, 55558600051, 2) exited non-zero on 'Local/55558600051@default-00000052;2'
[May 26 10:15:03] WARNING[12026][C-0000009d] func_hangupcause.c: Unable to find information for channel
[May 26 10:15:03] VERBOSE[12026][C-0000009d] pbx.c: Executing [h@default:1] AGI("Local/55558600051@default-00000052;2", "agi://127.0.0.1:4577/call_log--HVcauses--PRI-----NODEBUG-----16--------------------)") in new stack
[May 26 10:15:03] VERBOSE[12026][C-0000009d] res_agi.c: <Local/55558600051@default-00000052;2>AGI Script agi://127.0.0.1:4577/call_log--HVcauses ... ----------) completed, returning 0
[May 26 10:15:04] VERBOSE[12023] manager.c: Manager 'sendcron' logged off from 127.0.0.1
[May 26 10:15:04] VERBOSE[12024] manager.c: Manager 'sendcron' logged off from 127.0.0.1
[May 26 10:15:06] VERBOSE[12036] manager.c: Manager 'sendcron' logged on from 127.0.0.1
[May 26 10:15:06] VERBOSE[12036] manager.c: Manager 'sendcron' logged off from 127.0.0.1
[May 26 10:15:08] VERBOSE[12053] res_http_websocket.c: WebSocket connection from '120.29.69.222:17348' for protocol 'sip' accepted using version '13'
[May 26 10:15:08] VERBOSE[12053] chan_sip.c: Registered SIP '251' at 120.29.69.222:17348
[May 26 10:15:09] VERBOSE[12069] manager.c: Manager 'sendcron' logged on from 127.0.0.1
[May 26 10:15:09] VERBOSE[12071] manager.c: Manager 'sendcron' logged on from 127.0.0.1
[May 26 10:15:09] VERBOSE[12069] netsock2.c: Using SIP RTP CoS mark 5
[May 26 10:15:09] VERBOSE[12072] dial.c: Called 251
[May 26 10:15:09] VERBOSE[12071] netsock2.c: Using SIP RTP CoS mark 5
[May 26 10:15:09] VERBOSE[12073] dial.c: Called 251
[May 26 10:15:09] VERBOSE[12072] dial.c: SIP/251-00000047 is ringing
[May 26 10:15:09] VERBOSE[12073] dial.c: SIP/251-00000048 is ringing
[May 26 10:15:09] VERBOSE[12053] chan_sip.c: Got SIP response 486 "Busy Here" back from 120.29.69.222:17348
[May 26 10:15:09] VERBOSE[12073] dial.c: SIP/251-00000048 is busy
[May 26 10:15:09] VERBOSE[12072] res_rtp_asterisk.c: 0x7f6424025010 -- Strict RTP learning after remote address set to: 120.29.69.222:1885
[May 26 10:15:09] VERBOSE[12072] dial.c: SIP/251-00000047 answered
[May 26 10:15:09] VERBOSE[12072][C-0000009e] pbx.c: Executing [8600051@default:1] MeetMe("SIP/251-00000047", "8600051,F") in new stack
[May 26 10:15:09] VERBOSE[12072][C-0000009e] app_meetme.c: Created MeetMe conference 1023 for conference '8600051'
[May 26 10:15:09] VERBOSE[12072][C-0000009e] file.c: <SIP/251-00000047> Playing 'conf-onlyperson.gsm' (language 'en')
[May 26 10:15:10] VERBOSE[12072][C-0000009e] res_rtp_asterisk.c: 0x7f6424025010 -- Strict RTP learning after ICE completion
[May 26 10:15:10] VERBOSE[14909] res_rtp_asterisk.c: 0x7f6424025010 -- Strict RTP learning after remote address set to: 120.29.69.222:1885
[May 26 10:15:10] VERBOSE[12071] manager.c: Manager 'sendcron' logged off from 127.0.0.1
[May 26 10:15:10] VERBOSE[12072][C-0000009e] res_rtp_asterisk.c: 0x7f6424025010 -- Strict RTP switching to RTP target address 120.29.69.222:1885 as source






vicidial Version 2.14-730A SVN 3591 DB schema version 1657 asterisk version 13.38.2-vici

I have a 4 machine cluster
Database/ WEB / Dialer machine dual: quad core Xeon 2.67 GHz 48GB mem / Dialer dual: dual core Xeon 2.80 GHz 8GB mem / dialer core i5 3.0 GHz 4GB mem / dialer core-2 duo 2.93GHz 3GB mem
.. all machines have 2 nic's.. one internal and 1 external for traffic.