[Asterisk-Users] ENUM For Presence

[Kevin P. Fleming]

Douglas Garstang wrote:

> Then again.... updates are sent to the master DNS server, which filters them down to the slave DNS server, and you do queries to the slave... might take a few minutes to become effective.

The bigger issue would be caching on the client ends; unless you set the 
TTL on these records to some ridiculously low value (which causes 
constant hits on the DNS servers and excess network traffic), the client 
resolvers will keep the records around.