# Problem with meetme application

**URL:** <https://community.asterisk.org/t/problem-with-meetme-application/19225>\
**Category:** Asterisk Support\
**Created:** [February 15, 2008, 6:05pm UTC](https://community.asterisk.org/t/problem-with-meetme-application/19225 "2008-02-15T18:05:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![rurouni](https://avatars.discourse-cdn.com/v4/letter/r/49beb7/32.png) [@rurouni](https://community.asterisk.org/u/rurouni)\
**Post date:** [February 15, 2008, 6:05pm UTC](https://community.asterisk.org/t/problem-with-meetme-application/19225/1 "2008-02-15T18:05:24Z")

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greetings!

i have problem with meetme application, i have my conf of this way

meetme.conf  
[rooms]  
conf =\> 600,1234

extensions.conf  
exten =\> 600,1,meetme(600|1234)

this is the log that appear:  
warning[22148]: app\_meetme.c772 build\_conf: unable to open pseudo device

and the application say “the conference # is invalid”

thanks for your help! 😃

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**Author:** ![Brett\_Matthews](https://avatars.discourse-cdn.com/v4/letter/b/bc79bd/32.png) [@Brett\_Matthews](https://community.asterisk.org/u/Brett_Matthews)\
**Post date:** [February 15, 2008, 7:05pm UTC](https://community.asterisk.org/t/problem-with-meetme-application/19225/2 "2008-02-15T19:05:24Z")

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I had the same problem as I use a b410p card which uses misdn rather than zaptel. Turned out that to make conferences work ztdummy still needs to be running. It’s used as a timing source.

Make sure that before you fire up \* , start zaptel.

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**Author:** ![rurouni](https://avatars.discourse-cdn.com/v4/letter/r/49beb7/32.png) [@rurouni](https://community.asterisk.org/u/rurouni)\
**Post date:** [February 15, 2008, 7:32pm UTC](https://community.asterisk.org/t/problem-with-meetme-application/19225/3 "2008-02-15T19:32:28Z")

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[quote=“Brett Matthews”]I had the same problem as I use a b410p card which uses misdn rather than zaptel. Turned out that to make conferences work ztdummy still needs to be running. It’s used as a timing source.

Make sure that before you fire up \* , start zaptel.[/quote]

i forgot to say that a i dont any card installed…it is possible to make conference without this cards?

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**Author:** ![amit](https://avatars.discourse-cdn.com/v4/letter/a/ee7513/32.png) [@amit](https://community.asterisk.org/u/amit)\
**Post date:** [February 16, 2008, 3:37am UTC](https://community.asterisk.org/t/problem-with-meetme-application/19225/4 "2008-02-16T03:37:33Z")

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HI Guys  
did u try “modprobe ztdummy” command atet/asterisk directory. if not plz do that. they ur this error will not occur & meetme will work.  
warning[22148]: app\_meetme.c772 build\_conf: unable to open pseudo device  
above mentioed command will remove this error

Amit