The owner of the connection to the PSTN (Telco) must insert the NAME portion for Call Display. There is no way around that since its their database the NAME is located in. Someone correct me if I am wrong .
Yes, I think it's fair to say that the ILEC/CLEC to whom the phone number is routed is responsible for publishing reverse name lookup for that number.
This is somewhat analogous to in.addr.arpa reverse lookup for DNS.
It should be noted that, with LNP, any single phone number can be bound to any carrier, so there is not necessarily any notion of "native numbers" for a given carrier, etc.
That all being said, does anyone have any experience with what databases/mechanisms CLEC's might use to maintain and disseminate these reverse lookups?
I can think of some weird scenarios:
A) 443-555-1212 is a published number for "Consolidated Cheese Corp" and is initially serviced by Verizon.
B) "Consolidated Cheese" later ports 410-555-1212 to a facilities-based CLEC-provided PRI
C) "Consolidated Cheese" signs up for a VoIP termination service and wants to set caller ID to 410-555-1212 for its PSTN-bound calls. The VoIP termination service is provided by a different CLEC from (B), possibly in a different geography.
So, assuming CLEC in (B) has done its job and published some sort of reverse lookup for 410-555-1212, calls made via (C) should, in theory, correctly display Caller ID Name for the callee's. But how?
The only way I can think of for this to work is for a dip to be made for the reverse lookup, presumably via a SS7 request, to the (B) CLEC, even though the call may not originate with, terminate on, or otherwise pass through (B)'s switch network. (B) would only be touched for the reverse name lookup.
If this outline is close to reality, is there any notion of distributing these name lookups, a la DNS? What about caching/TTL? Where is this stuff written down?
Comments?
Dave _______________________________________________ Asterisk-Users mailing list [EMAIL PROTECTED] http://lists.digium.com/mailman/listinfo/asterisk-users To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
