Hi Kotaro - For Content Server playback to endpoints, to activate the feature requires Premium Resolution option key on the Content Server in order to enable the function. If you have it, you can set this on the site settings page.
Watching Recordings from an Endpoint
Content Server recordings made with 5.0 can be viewed on an endpoint by dialing a Playback H.323 ID or E.164 alias of the recording from your endpoint. Playback addresses for recordings are displayed on the Edit recording page and in the email sent from the Content Server when a call has finished.
To enable playback on a Premium Resolution Content Server, Site managers must first enter a playback H.323 and/or E.164 gateway prefix in Management > Configuration > Site settings.
To enable playback automatically for new recordings created with your personal recording alias, edit your recording alias and select Make finished recording available for playing on endpoints.
Alternatively, to playback an existing recording from an endpoint, select Make recording available for playing on endpoints in the Play recording on endpoints section of the Edit recording page and save. The playback address for your recording will be displayed under the option you have just selected.
If you play back your recordings on endpoints which support presentation, you can to toggle between layouts. You can pause and resume playback by pressing any DTMF key.
Playback from endpoints is available for H.323 and interworking calls only, with a maximum of two calls per Content Server.
http://www.cisco.com/en/US/docs/telepresence/tcs/5_1/administration/guide/premium_res.html
Hope this is what your looking for.
VR
Patrick
