Cisco Cisco Expressway
Appendix 2: Using Regex features of NAPTR
The incoming information to the NAPTR lookup is:
\d\.\d\.\d\. …\d
For example 1.2.1.7.5.5
Normal regular expression commands can be used to use these digits in the URI if required.
ENUM Dialing on Cisco Expressway Deployment Guide (X8.2)
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Appendix 2: Using Regex features of NAPTR