System information

country: country (2 chars)
iec1,iec2,iec3: international escape codes
countryprefix: default country prefix (country code)
prefix1,prefix2,prefix3: national destination codes
cfg_mobileprefixes: list of common mobile prefixes (useful for callenters to differentiate landline and mobile calls)
Deprecated settings (don't use these anymore):
normalize_localpx: replaced by normalizecallednumbersnec
setcalledtosipusername: replaced by rewriteinternalcalled
normalize_clean: replaced by validateinput
normalize_checksp: replaced by normalizecallednumbersnec
4.4.4. Caller ID Settings
On Caller ID we mean the number or name displayed for the called party which is sent by one of the followings sip headers:
-From header (URI and displayname)
-Contact header (URI and displayname)
-Authentication username
-Identity headers: p-asserted-identity, p-preferred-identity, remote-party-id
-Privacy settings: "privacy" header, "anonymous"
The caller-ID display is specified in the SIP and other RFC's but at the end it is up to the called party device to what caller-id to display (it can
be loaded even from a local store instead of from the SIP messages sent by the caller party)
The Caller ID can be influenced by the following factors:
-the SIP message received by the client as described above
-global number normalization settings (see the "number normalization" section)
-global caller id related settings (discussed below)
-caller and especially the called user settings such as the techprefix
-Prefix Rules settings (this is already deprecated. Use "Rules" whenever possible)
-Dial plan SQL (this is already deprecated. Use "Rules" whenever possible)
-Rules (see the "Rules" section)