On 9/21/2023 6:34 PM, Carlos Alvarez via VoiceOps wrote:
Let me make sure I read this correctly. You can send any CLID and it
works, except if you send one specific number it comes up as private?
Or did I misread it?
I can send the CLID of any DID on the SIP trunk, and it works, except
the one DID in question that comes up as private. I cannot set CLID to
any arbitrary value, $LocalTeleco drops the call if I present a CLID not
assigned to the client's SIP trunk.
In 3CX, I assume you are you setting the problem CLID at the extension
level, right? And the main CLID for the system is the company’s mail
number? Have you tried setting the problem CLID in the main settings to
see what happens?
The Trunk CLID is set to the main (problem) DID. This is the default
unless overridden at the extension or outbound route. For my tests, I
have a singular extension that I set to different DIDs (including the
main) and/or send the Trunk default. Same results either way. Main DID
comes across as private, other DIDs come across correct.
The MCI line *probably* uses ANI, which cannot be blocked, not CLID.
I had some suspicion, but am not knowledgeable enough about ANI/CLID to
make any assumptions.
Did that answer your questions?
With Gratitude,
Dave Brockman
Senior Network Engineer
Gig City Cloud, LLC
On Sep 21, 2023 at 3:26:56 PM, Dave Brockman via VoiceOps
<[email protected] <mailto:[email protected]>> wrote:
Hello,
First, please forgive me, I am a network engineer by trade, I am not
extremely well-versed in telephony. Please forgive me if I use the
wrong terminology or otherwise misstate something. It is not intended
and does not come from malicious intent.
I have a customer with a SIP trunk from $LocalTeleco. We send our
own CLID out from our (3CX) PBX. For one specific DID (which also
happens to be the office main number /sigh) everywhere I can see it
calling, shows up as "Restricted, Anonymous, or Private". However, I
can call MCI at 800.444.4444 and they tell me the correct CLID digits.
I have several hundred other DIDs that I can present, and appear
correctly at the same receiving carriers that show
restricted/anonymous/private on the main DID, and MCI will read back the
expected digits.
Would anyone more versed in this side of things be willing to let me
make a couple of test calls, and you tell me if you see anything strange
that I can take back to $LocalTeleco? This has been working as expected
for about 3 years, somewhere in the past couple of months, something has
changed (and not on our end). $LocalTeleco says everything looks fine
to them, but I think they are not super well versed in their Phone
switch (mostly by listening to them confer with colleagues and looking
up documentation while I'm on the phone with them).
With Gratitude,
Dave Brockman
Senior Network Engineer
Gig City Cloud, LLC
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