Snom 220 - Manual (Page 62)

Settings
62
GK TTL
If you selected “Gatekeeper” in the GK/GW Mode above, you can specify
the “Time to Live” (TTL) through this setting.
Message Center Number
Users can set the message center number through this setting.
Fast Start
This setting allows you to enable/disable the “fast start” feature.
Early Start
Here you can switch the early start feature of the H.323 stack on or off.
H.245 Tunneling
Through this setting, users can turn H.245 tunneling on or off.
H.450 Services
With this blanket setting, you can start or stop the H.450 services.
External line prefix
The external line prefix (e.g. 00) is replaced by the gateway prefix (e.g.
*5) for outgoing calls. So the user doesn’t have to dial *51234 but can
simply dial 001234 for going over the gateway.
Gateway prefix
The gateway prefix is the Alias with which the gateway is registered
with the gatekeeper. So when the gatekeeper receives a call starting
with the gateway prefix, it knows that the call has to be routed to the
gateway.
Status
System Information
Here you find information regarding phone type, MAC Address, IP
Address, firmware version, boot loader and firmware URLs.
Log
Dependent on a selectable log level the log messages are shown here.
SIP Trace
A quite helpful feature to display the SIP signaling.
UPnP Trace
You can discover the UPnP conversation between the phone and other
devices here.