Troubleshooting

The list of current bugs can be found on the official Wazo issue tracker.

Transfers using DTMF

When transfering a call using DTMF (*1) you get an invalid extension error when dialing the extension.

The workaround to this problem is to create a preprocess subroutine and assign it to the destinations where you have the problem.

Under Services ‣ IPBX ‣ IPBX configuration ‣ Configuration files add a new file containing the following dialplan:

[allow-transfer]
exten = s,1,NoOp(## Setting transfer context ##)
same = n,Set(__TRANSFER_CONTEXT=<internal-context>)
same = n,Return()

Do not forget to substitute <internal-context> with your internal context.

Some places where you might want to add this preprocess subroutine is on queues and outgoing calls to be able to transfer the called person to another extension.

Fax detection

XiVO does not currently support Fax detection. The following describe a workaround to use this feature. The behavior is to answer all incoming (external) call, wait for a number of seconds (4 in this example) : if a fax is detected, receive it otherwise route the call normally.

Note

This workaround works only :

  • on incoming calls towards an User (and an User only),
  • if the incoming trunk is a DAHDI or a SIP trunk,
  • if the user has a voicemail which is activated and with the email field filled
  • XiVO >= 13.08 (needs asterisk 11)

Be aware that this workaround will probably not survive any upgrade.

  1. In the Web Interface and under Services ‣ IPBX ‣ IPBX configuration ‣ Configuration files add a new file named fax-detection.conf containing the following dialplan:

    ;; Fax Detection
[pre-user-global-faxdetection]
exten = s,1,NoOp(Answer call to be able to detect fax if call is external AND user has an email configured)
same  =   n,GotoIf($["${XIVO_CALLORIGIN}" = "extern"]?:return)
same  =   n,GotoIf(${XIVO_USEREMAIL}?:return)
same  =   n,Set(FAXOPT(faxdetect)=yes) ; Activate dynamically fax detection
same  =   n,Answer()
same  =   n,Wait(4) ; You can change the number of seconds it will wait for fax (4 to 6 is good)
same  =   n,Set(FAXOPT(faxdetect)=no) ; If no fax was detected deactivate dyamically fax detection (needed if you want directmedia to work)
same  =   n(return),Return()

exten = fax,1,NoOp(Fax detected from ${CALLERID(num)} towards ${XIVO_DSTNUM} - will be sent upon reception to ${XIVO_USEREMAIL})
same  =     n,GotoIf($["${CHANNEL(channeltype)}" = "DAHDI"]?changeechocan:continue)
same  =     n(changeechocan),Set(CHANNEL(echocan_mode)=fax) ; if chan type is dahdi set echo canceller in fax mode
same  =     n(continue),Gosub(faxtomail,s,1(${XIVO_USEREMAIL}))

  2. In the file /etc/xivo/asterisk/xivo_globals.conf set the global user subroutine to pre-user-global-faxdetection : this subroutine will be executed each time a user is called:

    XIVO_PRESUBR_GLOBAL_USER = pre-user-global-faxdetection

  3. Reload asterisk configuration (both for dialplan and dahdi):

    asterisk -rx 'core reload'

Berofos Integration with PBX

You can use a Berofos failover switch to secure the ISDN provider lines when installing a XiVO in front of an existing PBX. The goal of this configuration is to mitigate the consequences of an outage of the XiVO : with this equipment the ISDN provider links could be switched to the PBX directly if the XiVO goes down.

XiVO does not offer natively the possibility to configure Berofos in this failover mode. This section describes a workaround.

Logical view:

                +------+                            +-----+
-- Provider ----| XiVO | -- ISDN Interconnection  --| PBX | -- Phones
                +------+                            +-----+

Connection:

  +-------------Bero*fos---------------+
  | A        B        C        D       |
  | o o o o  o o o o  o o o o  o o o o |
  +-+-+------+-+------+-+------+-+-----+
    | |      | |      | |      | |
   / /       | |      | |      | |
  / /    +--------+   / /   +---------+
2 T2     |  XiVO  |  / /    |   PBX   |
         +--------+ / /     +---------+
             | |   / /
             \ \__/ /
              \____/

The following describes how to configure your XiVO and your Berofos.

  1. Follow the Berofos general configuration (firmware, IP, login/password) described in the the Berofos Installation and Configuration page.

  2. When done, apply these specific parameters to the berofos:

    bnfos --set scenario=1   -h 10.105.2.26 -u admin:berofos
bnfos --set mode=1       -h 10.105.2.26 -u admin:berofos
bnfos --set modedef=1    -h 10.105.2.26 -u admin:berofos
bnfos --set wdog=1       -h 10.105.2.26 -u admin:berofos
bnfos --set wdogdef=1    -h 10.105.2.26 -u admin:berofos
bnfos --set wdogitime=60 -h 10.105.2.26 -u admin:berofos

  3. Add the following script /usr/local/sbin/berofos-workaround:

    #!/bin/bash
# Script workaround for berofos integration with a XiVO in front of PABX

res=$(/etc/init.d/asterisk status)
does_ast_run=$?
if [ $does_ast_run -eq 0 ]; then
    /usr/bin/logger "$0 - Asterisk is running"
    # If asterisk is running, we (re)enable wdog and (re)set the mode
    /usr/bin/bnfos --set mode=1 -f fos1 -s
    /usr/bin/bnfos --set modedef=1 -f fos1 -s
    /usr/bin/bnfos --set wdog=1 -f fos1 -s

    # Now 'kick' berofos ten times each 5 seconds
    for ((i == 1; i <= 10; i += 1)); do
        /usr/bin/bnfos --kick -f fos1 -s
        /bin/sleep 5
    done
else
    /usr/bin/logger "$0 - Asterisk is not running"
fi

  4. Add execution rights to script:

    chmod +x /usr/local/sbin/berofos-workaround

  5. Create a cron to launch the script every minutes /etc/cron.d/berofos-cron-workaround:

    # Workaround to berofos integration
MAILTO=""

*/1 * * * * root /usr/local/sbin/berofos-workaround

Upgrading from XiVO 1.2.3

  1. There is an issue with xivo-libsccp and pf-xivo-base-config during an upgrade from 1.2.3:

    dpkg: error processing /var/cache/apt/archives/pf-xivo-base-config_13%3a1.2.4-1_all.deb (--unpack):
trying to overwrite '/etc/asterisk/sccp.conf', which is also in package xivo-libsccp 1.2.3.1-1
...
Errors were encountered while processing:
/var/cache/apt/archives/pf-xivo-base-config_13%3a1.2.4-1_all.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

  2. You have to remove /var/lib/dpkg/info/xivo-libsccp.conffiles:

    rm /var/lib/dpkg/info/xivo-libsccp.conffiles

  3. You have to edit /var/lib/dpkg/info/xivo-libsccp.list and remove the following line:

    /etc/asterisk/sccp.conf

  4. and remove /etc/asterisk/sccp.conf:

    rm /etc/asterisk/sccp.conf

  5. Now, you can launch xivo-upgrade to finish the upgrade process

CTI server is frozen and won’t come back online

You must ensure that the partition containing /var always has at least 100 MiB of free disk space. If it does not, the symptoms are:

  • the CTI server is frozen after logging/unlogging an agent or adding/removing a member from a queue.
  • trying to log/unlog an agent via a phone is not possible

To get the system back on tracks after freeing some space in /var, you must do:

xivo-service restart

CTI server is unexpectedly terminating

If you observes that your CTI server is sometimes unexpectedly terminating with the following message in /var/log/xivo-ctid.log:

(WARNING) (main): AMI: CLOSING

Then you might be in the case where asterisk generates lots of data in a short period of time on the AMI while the CTI server is busy processing other thing and is not actively reading from its AMI connection. If the CTI server takes too much time before consuming some data from the AMI connection, asterisk will close the AMI connection. The CTI server will terminate itself once it detects the connection to the AMI has been lost.

There’s a workaround to this problem called the ami-proxy, which is a process which buffers the AMI connection between the CTI server and asterisk. This should only be used as a last resort solution, since this increases the latency between the processes and does not fix the root issue.

Note

New in version 14.21

To enable the ami-proxy, you must:

  1. Edit the file /etc/default/xivo-ctid and add the following line:

    export XIVO_CTID_AMI_PROXY=1

  2. Restart the CTI server:

    service xivo-ctid restart

If you are on a XiVO cluster, you must do the same procedure on the slave if you want the ami-proxy to also be enabled on the slave.

To disable the ami-proxy, make sure the line you added in step 1 is completely removed (it is not sufficient to set the value of the variable to 0). You can remove the /etc/default/xivo-ctid file if it is now empty.

Agents receiving two ACD calls

An agent can sometimes receive more than 1 ACD call at the same time, even if the queues he’s in have the “ringinuse” parameter set to no (default).

This behaviour is caused by a bug in asterisk: https://issues.asterisk.org/jira/browse/ASTERISK-16115

It’s possible to workaround this bug in XiVO by adding an agent subroutine. The subroutine can be either set globally or per agent:

[pre-limit-agentcallback]
exten = s,1,NoOp()
same  =   n,Set(LOCKED=${LOCK(agentcallback)})
same  =   n,GotoIf(${LOCKED}?:not-locked,1)
same  =   n,Set(GROUP(agentcallback)=${XIVO_AGENT_ID})
same  =   n,Set(COUNT=${GROUP_COUNT(${XIVO_AGENT_ID}@agentcallback)})
same  =   n,NoOp(${UNLOCK(agentcallback)})
same  =   n,GotoIf($[ ${COUNT} <= 1 ]?:too-many-calls,1)
same  =   n,Return()

exten = not-locked,1,NoOp()
same  =   n,Log(ERROR,Could not obtain lock)
same  =   n,Wait(0.5)
same  =   n,Hangup()

exten = too-many-calls,1,NoOp()
same  =   n,Log(WARNING,Not calling agent ID/${XIVO_AGENT_ID} because already in use)
same  =   n,Wait(0.5)
same  =   n,Hangup()

This workaround only applies to queues with agent members; it won’t work for queues with user members.

Also, the subroutine prevent asterisk from calling an agent twice by hanguping the second call. In the agent statistics, this will be shown as a non-answered call by the agent.