
• Subscriber/Number of Digits to strip
• Subscriber/Prefix to insert
• National/Number of Digits to strip
• National/Prefix to insert
The E.164 format of subscriber calls (for example, NXX in North America) is:
+<countrycode><area code><subscriber number>.
The parameters Subscriber/Number of digits to strip and prefix to insert are used to modify the
format of subscriber numbers presented from the PSTN due to region specific requirements.
The E.164 format of national calls (for example, NPA in North America) is:
+<countrycode><national number>.
The parameters National/Number of digits to strip and prefix to insert are used to modify the
format of national numbers presented from the PSTN due to region specific requirements.
Parameter: Country Code
This parameter defines the country code to be used in CLID generation.
Parameter: Area Code
This parameter defines the area code to be used in CLID generation.
Parameter: Subscriber/Number of Digits to strip
For incoming subscriber (NXX) calls this parameter defines the number of digits to strip from
the incoming phone number prior to conversion to E.164 format.
Parameter: Subscriber/Prefix to insert
For incoming subscriber (NXX) calls this parameter defines the prefix to insert after stripping
any digits necessary from the incoming phone number prior to conversion to E.164 format.
Parameter: National/Number of Digits to strip
For incoming national (NPA) calls this parameter defines the number of digits to strip from the
incoming phone number prior to conversion to E.164 format.
Avaya CS 1000 SIP Gateway CLID Parameters configuration
Deployment Guide October 2010 51
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