How long at a job is enough to put on a CV/Resume

How long at a job is enough to put on a CV/Resume , for example is 6months long enough at a job to add it to your CV or is shorter time a possibility.
Reason i ask is i recently had a interview for a call centre job , broadband tech support. And if i get offered the position i really have no long term plan to stay there. I know what the job is and have read 100s of reviews by previous emplyees saying there is no hope of promotion to level 2 - 3 etc but for me it will be just so i can put on my CV i have tech support/customer service history.
i was thinking IF i get offered the job which will really be just for my CV as the money is poor and will not be making much money doing it given that i have to pay travel/petrol expenses and parking etc i will really only be doing it to put on my CV
how long will be long enough to add it to my CV for future purposes of a better position in tech support , also i plan to have CCNA r&s completed by xmas so i was kinda saying to myself grin and bear it for several months get the cert and then get a better job
any thoughts pls
Reason i ask is i recently had a interview for a call centre job , broadband tech support. And if i get offered the position i really have no long term plan to stay there. I know what the job is and have read 100s of reviews by previous emplyees saying there is no hope of promotion to level 2 - 3 etc but for me it will be just so i can put on my CV i have tech support/customer service history.
i was thinking IF i get offered the job which will really be just for my CV as the money is poor and will not be making much money doing it given that i have to pay travel/petrol expenses and parking etc i will really only be doing it to put on my CV
how long will be long enough to add it to my CV for future purposes of a better position in tech support , also i plan to have CCNA r&s completed by xmas so i was kinda saying to myself grin and bear it for several months get the cert and then get a better job
any thoughts pls
Comments
yes i have 1st icnd1 exam on monday and then hoping to get icnd2 as soon as possible , but if i get that job i'm saying xmas will be a good/realistic deadline for icdn2 too. Then January i could job hunt with updated cv.
1 month or less I wouldn't list personally. Looks strange..... ( of course if you are new and it's your first short termed project then its fine ).
I've had gigs for two months. When I get interviews, it's never been a problem. I'm not sure how much that hurts me overall though.
I would plan on staying a year. Usually a years experience is what will be requested for a lot of entry level jobs.
I'm not saying stay a year if another better position comes up. I'm saying if your looking for tech experience don't go quit to work construction 7 months in (get that 1 year in under your belt).
thanks everyone for replies
Yes i would stay until i found another Tech position, i have already turned down a job in hardware (door handles etc) that was next door to me basically and better pay cos i want to stay on the right path to get a proper career/job.
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