Axis Communications AXIS 2420 user manual Picture Frequency for Modem Applications

34 Choosing Your Application AXIS 2420 User’s Manual

Picture Frequency for Modem Applications

The speed of your modem link is a dominant factor in determining the frequency at which images are displayed in your browser, and an average-sized image is normally transmitted in 2-4 seconds. For alarm applications, where picture updating is critical, images are buffered into internal memory prior to being uploaded to your ISP or Web server. This means that a slow connection will not prevent your images being correctly saved and transmitted.

Proprietary ISP Dial-up Protocols

If you need to install any special software before initiating a dial-up connection, it is likely that your ISP is using proprietary protocols incompatible with the standard-based AXIS 2420. In these circumstances, we recommend that you ask your ISP for an alternative dial-up service that allows for standard dial-up networking. Axis does not guarantee the compatibility of this product with any ISPs requiring the use of proprietary or non-standard software as a pre-requisite for dial-up connections.