# \[HELP\] problem with zap channels

**URL:** <https://community.asterisk.org/t/help-problem-with-zap-channels/8346>\
**Category:** Asterisk Support\
**Created:** [August 7, 2006, 3:39pm UTC](https://community.asterisk.org/t/help-problem-with-zap-channels/8346 "2006-08-07T15:39:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ploiko](https://avatars.discourse-cdn.com/v4/letter/p/71e660/32.png) [@ploiko](https://community.asterisk.org/u/ploiko)\
**Post date:** [August 7, 2006, 3:39pm UTC](https://community.asterisk.org/t/help-problem-with-zap-channels/8346/1 "2006-08-07T15:39:07Z")

</div>

I have recently installed my server and all worked well until I included my ISDN card. Drivers are well installed but when I load the channel by service zaptel start, an error message comes :

```auto
Aug 7 09:22:12 asterisk1 kernel: qozap: activating layer 1, span 0
Aug 7 09:22:12 asterisk1 kernel: qozap: activating layer 1, span 1
Aug 7 09:22:12 asterisk1 kernel: qozap: activating layer 1, span 3
Aug 7 09:22:12 asterisk1 kernel: qozap: activating layer 1, span 2
Aug 7 09:22:16 asterisk1 kernel: qozap: t3 timer expired for span 0
Aug 7 09:22:16 asterisk1 kernel: Zaptel: Master changed to ztqoz/2/2
Aug 7 09:22:16 asterisk1 kernel: qozap: t3 timer expired for span 1
Aug 7 09:22:16 asterisk1 kernel: Zaptel: Master changed to ztqoz/2/3
Aug 7 09:22:16 asterisk1 kernel: qozap: t3 timer expired for span 2
Aug 7 09:22:16 asterisk1 kernel: Zaptel: Master changed to ztqoz/2/4
Aug 7 09:22:16 asterisk1 kernel: qozap: t3 timer expired for span 3
Aug 7 09:22:16 asterisk1 kernel: qozap: not re-activating layer1 span 0
Aug 7 09:22:16 asterisk1 kernel: qozap: not re-activating layer1 span 1
Aug 7 09:22:16 asterisk1 kernel: qozap: not re-activating layer1 span 2
Aug 7 09:22:16 asterisk1 kernel: qozap: not re-activating layer1 span 3
Aug 7 09:22:16 asterisk1 kernel: qozap: clearing alarms on span 0
Aug 7 09:22:16 asterisk1 kernel: Zaptel: Master changed to ztqoz/2/1
Aug 7 09:22:16 asterisk1 kernel: qozap: clearing alarms on span 1
Aug 7 09:22:16 asterisk1 kernel: qozap: clearing alarms on span 2
Aug 7 09:22:16 asterisk1 kernel: qozap: clearing alarms on span 3
```

and I can’t phone though my ISDN card (the dels of the card light red).

Does anyone know why I have this error ?

Thank in advance.