Cisco SPA112 Administration Guide - Page 18

Configuring the Network Basic Setup 3 Field PPPoE Settings MTU Description • User Name and Password: Enter the user name and password that you use to log into your ISP network through a PPPoE connection. • Service Name: If provided by your ISP, enter the Service Name. • Connect on Demand: You can configure the ATA to disconnect your Internet connection after a specified period of inactivity (Max Idle Time). If your Internet connection has been terminated due to inactivity, this feature enables the ATA to automatically re-establish your connection as soon as you attempt to access the Internet again. If you choose this option, also set the Max Idle Time. • Keep Alive: This option keeps you connected to the Internet indefinitely, even when your connection sits idle. If you choose this option, also set the Redial Period, which is the interval at which the ATA verified Internet connectivity. The default period is 30 seconds. Also: Enter the MTU, as described in this table, and see Optional Settings, page 19. The Maximum Transmission Unit (MTU) setting specifies the largest protocol data unit (in bytes) permitted for network transmission. Generally, a larger MTU means greater efficiency. However, a larger packet may cause delays for other traffic and is more likely to become corrupted. In most cases, you should keep the default setting, Auto, to allow the ATA to choose the appropriate MTU. To specify the MTU, select Manual, and then enter the number of bytes. Cisco SPA100 Series Phone Adapters Administration Guide 18