customers are disconnecting

[Alexandre11]

Customer complains of falls in wi-fi network using cisco mobile phones model 7925, and these customers connect in cisco ap 1702.

The configuration of the Cisco Aironet 1702:

Current configuration : 4753 bytes
!
! Last configuration change at 09:53:10 UTC Thu Jun 21 2018 by alexandre
! NVRAM config last updated at 09:41:19 UTC Thu Jun 21 2018 by alexandre
! NVRAM config last updated at 09:41:19 UTC Thu Jun 21 2018 by alexandre
version 15.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime localtime
service password-encryption
!
hostname TRANS-1702I-JABBER
!
!
logging buffered 20480
logging rate-limit console 9
no logging console
enable secret 5 $1$y9iw$Sw3GmmYFEyZduSUbNdhUv.
!
aaa new-model
!
!
aaa authentication login default local
aaa authentication enable default enable
aaa authorization exec default local if-authenticated
!
!
!
!
!
aaa session-id common
clock summer-time GMT-2 recurring 3 Sun Oct 0:00 3 Sun Feb 0:00
no ip source-route
no ip cef
no ip domain lookup
ip domain name transdesk.constel.com.br
!
!
!
!
dot11 pause-time 100
dot11 syslog
!
dot11 ssid voice
authentication open
authentication key-management wpa version 2
guest-mode
wpa-psk ascii 7 051D0906224944081B071200
!
!
dot11 wpa handshake timeout 2000
!
no ipv6 cef
!
crypto pki trustpoint TP-self-signed-755635410
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-755635410
revocation-check none
rsakeypair TP-self-signed-755635410
!
!
crypto pki certificate chain TP-self-signed-755635410
certificate self-signed 01
30820253 308201BC A0030201 02020101 300D0609 2A864886 F70D0101 04050030
30312E30 2C060355 04031325 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 37353536 33353431 30301E17 0D313530 38313131 35313334
355A170D 32303031 30313030 30303030 5A303031 2E302C06 03550403 1325494F
532D5365 6C662D53 69676E65 642D4365 72746966 69636174 652D3735 35363335
34313030 819F300D 06092A86 4886F70D 01010105 0003818D 00308189 02818100
C94E9668 DC9EEB6D B665FE7D 622EAD98 186EB180 5F3E2D4E FFB8EAB8 1ABFFB4B
7C23E41E 64E91822 9CDB33A4 469594B0 AD9E30E1 D67CE73B 21E0C0E9 B527A617
9532CF9A 5D511C10 FB1FDBF2 9E8434ED 8ED2EE2D 63912D99 093AF685 A0B21F23
F494E52D D107300B C88F9200 2EDD898D 72A85A14 5A7D5BD5 577BE273 3F5203C1
02030100 01A37D30 7B300F06 03551D13 0101FF04 05300301 01FF3028 0603551D
11042130 1F821D70 61722D61 70313134 312D7465 632E636F 6E737465 6C2E636F
6D2E6272 301F0603 551D2304 18301680 14236FF8 0C9DE816 851514D8 53A77E85
41DC2A9B 47301D06 03551D0E 04160414 236FF80C 9DE81685 1514D853 A77E8541
DC2A9B47 300D0609 2A864886 F70D0101 04050003 81810089 D83AAB74 162E0C9A
41DC723E 1093DAD2 8B8C42D1 4C055551 5F2EDF70 EBC9B207 D9C92419 3E4FFA2E
A66CEED8 DFA89670 370EEF7F 9AEB71B2 F4254B02 6E4CF7BA DA5FBA08 271B99F8
30DF4B42 FAC1F269 C1B19875 9D16170A 8B8761F7 B95B14B0 B80728A4 DCC5875E
B007979E C758830F 099A096E DADBEE88 6FB1F5F6 49E912
quit
archive
log config
logging enable
logging size 1000
hidekeys
username Cisco password 7 047802150C2E
username RODRIGO privilege 15 secret 5 $1$zZsF$HWBCcjlm6MVjK.diq8DHx.
username FLORIANO privilege 15 secret 5 $1$BmIS$ms98QXXQYK4dAFsaT3SW2/
username ALEXANDRE privilege 15 secret 5 $1$c2eN$2omwEB3QB97IU0U6BTV1V.
username SILVANO privilege 15 secret 5 $1$cyHP$50syoSdPdLYIVk16dxzG8/
username cna privilege 15 secret 5 $1$9NkL$VSHPn8RGN4kyGE0Jb2z/2.
!
!
bridge irb
!
!
!
interface Dot11Radio0
no ip address
no ip route-cache
!
encryption mode ciphers aes-ccm
!
ssid voice
!
antenna gain 0
stbc
speed 12.0 18.0 basic-24.0 36.0 48.0 54.0 m0. m1. m2. m3. m4. m5. m6. m7. m8. m9. m10. m11. m12. m13. m14. m15.
channel 2437
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
!
interface Dot11Radio1
no ip address
shutdown
antenna gain 0
peakdetect
no dfs band block
channel dfs
station-role root
bridge-group 1
bridge-group 1 subscriber-loop-control
bridge-group 1 spanning-disabled
bridge-group 1 block-unknown-source
no bridge-group 1 source-learning
no bridge-group 1 unicast-flooding
!
interface GigabitEthernet0
no ip address
duplex auto
speed auto
bridge-group 1
bridge-group 1 spanning-disabled
no bridge-group 1 source-learning
!
interface GigabitEthernet1
no ip address
duplex auto
speed auto
bridge-group 1
bridge-group 1 spanning-disabled
no bridge-group 1 source-learning
!
interface BVI1
mac-address 00c8.8b02.9ae4
ip address 172.16.64.201 255.255.255.0
!
ip default-gateway 172.16.64.1
ip forward-protocol nd
ip http server
ip http authentication aaa
ip http secure-server
ip http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag
!
!
!
bridge 1 route ip
!
!
!
line con 0
line vty 0 4
exec-timeout 300 0
transport input all
!
end

follows the logs of the falls

Jun 21 09:54:03: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.b72d Reason: Sending station has left the BSS
Jun 21 09:54:04: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442B72D 7cad.7442.b72d Associated KEY_MGMT[WPAv2 PSK]
Jun 21 09:54:11: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.b72d Reason: Sending station has left the BSS
Jun 21 09:54:12: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442B72D 7cad.7442.b72d Associated KEY_MGMT[WPAv2 PSK]
Jun 21 09:56:00: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.b72d Reason: Sending station has left the BSS
Jun 21 09:56:00: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442B72D 7cad.7442.b72d Associated KEY_MGMT[WPAv2 PSK]
Jun 21 09:58:33: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.f8e6 Reason: Sending station has left the BSS
Jun 21 09:58:33: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442F8E6 7cad.7442.f8e6 Associated KEY_MGMT[WPAv2 PSK]
Jun 21 09:58:45: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 1ce6.2b1c.3221 Reason: Previous authentication no longer valid
Jun 21 10:00:30: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 1ce6.2b1c.3221 Associated KEY_MGMT[WPAv2 PSK]
Jun 21 10:05:22.759: (0000.0000.0000): dot11_auth: Received abort request for client No client entry to abort for application 0x1
Jun 21 10:05:22: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.a831 Reason: Sending station has left the BSS
Jun 21 10:05:22: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442A831 7cad.7442.a831 Associated KEY_MGMT[WPAv2 PSK]
Jun 21 10:09:30.139: (0000.0000.0000): dot11_auth: Received abort request for client No client entry to abort for application 0x1
Jun 21 10:09:30: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
Jun 21 10:09:30: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
Jun 21 10:11:25.035: (0000.0000.0000): dot11_auth: Received abort request for client No client entry to abort for application 0x1
Jun 21 10:11:25: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 1ce6.2b1c.3221 Reason: Previous authentication no longer valid
Jun 21 10:11:42: %DOT11-6-ASSOC: Interface Dot11Radio0, Station 1ce6.2b1c.3221 Associated KEY_MGMT[WPAv2 PSK]
Jun 21 10:12:31.191: (0000.0000.0000): dot11_auth: Received abort request for client No client entry to abort for application 0x1
Jun 21 10:12:31: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
Jun 21 10:12:33: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]

[Leo Laohoo]

Ummmm ... there is really no helpful information here.   

I can see the config.  I can see the output of the "sh logs".  What I don't see is what the customer complaint is all about.  I can't even begin to determine if the issue is wireless or CUCM.

[Alexandre11]

the client has noticed drops in the wi-fi network connections, the calls cut, the muted call and the connections are not recorded using mobile phones.

[Alexandre11]

I've updated all the phones model 7925 to the latest version.

[Leo Laohoo]

---

@Alexandre11 wrote:

the client has noticed drops in the wi-fi network connections

---

And no one has bothered to do any initial troubleshooting other than the "sh log" output?

[AlexandreOppermann]

*Jun 22 15:19:26: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:19:26: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:19:37: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:19:37: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:19:38: %DOT11-6-ASSOC: Interface Dot11Radio0, Station a87c.013c.1d8e Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:19:43: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:19:44: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:21:41: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.6479 reached max retries, removing the client
*Jun 22 15:21:41: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Previous authentication no longer valid
*Jun 22 15:21:41: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.6479 reached max retries, removing the client
*Jun 22 15:21:41: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.6479 reached max retries, removing the client
*Jun 22 15:21:41: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.6479 reached max retries, removing the client
*Jun 22 15:21:41: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.6479 reached max retries, removing the client
*Jun 22 15:21:42: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:22:13: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:22:13: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:22:16: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:22:16: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:22:25: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:22:25: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:23:56: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:23:58: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:24:21: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:24:21: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:24:34: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:24:34: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:24:38: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:24:38: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:24:50: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:24:59: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.074e Reason: Sending station has left the BSS
*Jun 22 15:24:59: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442074E 7cad.7442.074e Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:25:09.734: (0000.0000.0000): dot11_mgmt:reached maximum retries,deleting the client
*Jun 22 15:25:30: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:26:00: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:26:20.734: (0000.0000.0000): dot11_mgmt:reached maximum retries,deleting the client
*Jun 22 15:26:40: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:29:33: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:29:33: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:32:19: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:32:19: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:33:10: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:33:10: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:34:04: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:34:04: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:34:05: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:34:05: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:34:27: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:34:27: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:34:38: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:34:38: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:34:41: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:35:00.746: (0000.0000.0000): dot11_mgmt:reached maximum retries,deleting the client
*Jun 22 15:35:31: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.c3b5 reached max retries, removing the client
*Jun 22 15:35:48: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:35:49: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:36:12: %DOT11-4-MAXRETRIES: Packet to client 7cad.7442.c3b5 reached max retries, removing the client
*Jun 22 15:38:35: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:38:40: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:38:41: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:42:52: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:42:52: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:47:59: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:47:59: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:52:48: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:52:50: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:53:05: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:53:05: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:53:15: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 15:53:15: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:53:53: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:53:53: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:54:11: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:54:11: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:55:01: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:55:01: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:58:54: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:58:54: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 15:59:00: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 15:59:00: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 16:01:14: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 16:01:14: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 16:02:00: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 16:02:00: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 16:02:01: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.6479 Reason: Sending station has left the BSS
*Jun 22 16:02:01: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD74426479 7cad.7442.6479 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 16:02:32: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 16:02:32: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
*Jun 22 16:02:42: %DOT11-6-DISASSOC: Interface Dot11Radio0, Deauthenticating Station 7cad.7442.c3b5 Reason: Sending station has left the BSS
*Jun 22 16:02:42: %DOT11-6-ASSOC: Interface Dot11Radio0, Station SEP7CAD7442C3B5 7cad.7442.c3b5 Associated KEY_MGMT[WPAv2 PSK]
TRANS-1702I-JABBER#

[Andrew Shoop]

Alexandre,

Is this a new issue that was previously working fine, or has this always been the case?

Is there a particular spot of the facility where the problem seems to occur?

Do you have overlapping AP coverage in the area where the calls are dropping?

Is this AP connecting to a wireless controller? Are you performing any of the roaming optimizations (similar to WLC Config Guide 8.6 - Roaming Section)? 

Is there authentication on the SSID you're having trouble with? MAC whitelist?

[AlexandreOppermann]

Is this a new issue that was previously working fine, or has this been the case?

Reported that this is happening now, I do not know what it was like before

Is there a particular spot of the facility where the problem seems to occur?

As far as I know they are with all the phones model 7925

Do you have overlapping AP coverage in the area where the calls are dropping?
There is not

Is this an AP connecting to a wireless controller? Are you performing any of the roaming optimizations (similar to WLC Config Guide 8.6 - Roaming Section)?

No, he's autonomous.

Is there authentication on the SSID you're having trouble with? MAC whitelist?

There is authentication on ssid voice, uses la wpa2, white list does not use

[Andrew Shoop]

You should have some overlap for wireless voice. The Enterprise Mobility Design Guide, 8.5 calls for a minimum of 15% and a max of 50% overlap.

Other notable recommendations: 

Cisco recommends using the 5GHz bands where possible. If you are going to use 2.4 GHz, they recommend disabling some data rates and setting others to required.

"If 802.11 and 802.11b are not required to support legacy 2.4 GHz Wi-Fi clients, Cisco recommends disabling the data rates of 1, 2, 5.5, and 11 MHz.

If these rates are disabled, one or more 802.11n-2.4 GHz data rates must be set to required. Cisco recommends that the 6 MHz data rate be set to required, but this depends on the cell size design requirements, which might require using a higher bit rate. If possible, an 802.11n-2.4 GHz-only network is recommended rather than a combined 802.11b/g network."

If you have both 5 GHz and 2.4 GHz running, make sure to use Band Select to get the wireless NICs on the endpoints to prefer the 5 GHz.

[AlexandreOppermann]

I changed the channel 1 for 11, i don't have problem more.