This article relates to the Cisco TelePresence MCU 4203, Cisco TelePresence MCU MSE 8420, Cisco TelePresence IP VCR 2210, Cisco TelePresence VCR MSE 8220, Cisco TelePresence MCU 4505 and Cisco TelePresence MCU MSE 8510 products.
Q. Does the 'Required gatekeeper' setting stop the Codian MCU / IP VCR connecting to unregistered endpoints?
A. On the Settings > Gatekeeper page, for H323 gatekeeper usage you can choose between Enabled, Disabled and Required.
However, this setting does not prevent the MCU / IP VCR connecting to unregistered endpoints. When the registration is set to Required the unit must get a reply from the gatekeeper before it calls out or accepts a call in. So, for example, if the gatekeeper is unavailable, when the setting is Required, the unit will not accept or make calls. If the setting is Enabled, then the unit queries the gatekeeper, but if there is no reply then it connects the call anyway.
The decision on whether to allow calls to unregistered endpoints depends on the gatekeeper. The unit asks the gatekeeper every time it makes a call out or a call is made in (if the call arrives on a port with the Ethernet port association on). If the gatekeeper tells the unit to reject the call, for instance because the endpoint is not registered, then the unit will do just that. That depends on gatekeeper settings, not on the settings on the MCU / IP VCR.