Re: [Asterisk-Users] No Caller Name sent from Asterisk over Nationalor DMS100 PRI to a Norstar MICS?

2004-09-20 Thread Kevin P. Fleming
David Troy wrote:
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?
As I understand it, the scenario you described is already how things 
work. LECs and CLECs do not manage their own Caller ID databases (at 
least not for other telcos to dip into), all of this data is stored in 
the nationwide SS7 network, managed by VeriSign (used to be Illuminet).

When a telco switch receives a call from _anywhere_ and it wants to 
deliver Calling Name to the called part, it does an SS7 lookup to get 
the registered Calling Name for Calling Party Number that was given to 
it. It _is_ possible for the caller-provided Calling Party Name to be 
transferred all the way across the network and delivered to the 
recipient (if both ends are ISDN-equipped), but this is not common, and 
is a major security (such as it is) hole anyway.

So, to answer your question: whichever telco is currently providing 
inbound service for a given DN (and billing the customer for that) is 
responsible for maintaining the associated name record in the nationwide 
SS7 network database. If the customer is able to generate calls using 
another telco and provide this DN as the Calling Party Number, the 
called party will still see the same Calling Party Name, regardless of 
the originating telco for that call or the path it took through the PSTN.
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Re: [Asterisk-Users] No Caller Name sent from Asterisk over Nationalor DMS100 PRI to a Norstar MICS?

2004-09-16 Thread Brandon Patterson (peering)
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 .

Brandon

 For instance, it is possible to set your Caller ID Number on an outbound
 PRI call to 202-456-1414; on the callee's caller ID Display, the name and
 number will read THE WHITE HOUSE 202-456-1414.  However, I do not
 recommend doing this.  It is just a colorful example.


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Re: [Asterisk-Users] No Caller Name sent from Asterisk over Nationalor DMS100 PRI to a Norstar MICS?

2004-09-16 Thread David Troy

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
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Re: [Asterisk-Users] No Caller Name sent from Asterisk over Nationalor DMS100 PRI to a Norstar MICS?

2004-09-16 Thread Chad Scott
If I recall correctly, the National ISDN protocol (NI2, I think) has 
the capability of forwarding CID NAME to the provider who can then do 
whatever they want with that information (including simply discard it).

On Sep 16, 2004, at 5:29 AM, Brandon Patterson (peering) wrote:
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 .
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