Phone system does not accept blocked caller ID

You would have to subscribe to that feature from your local phone company, then when a number like that calls they will get a recording that states you do not accept blocked calls...

Do you have access to Manager? You can tag the incoming call which does not show the caller ID of a call until the call is answered.

In some instances the caller might have caller-id blocked or a *67 manaul caller id block.

You are correct if you have a duplicate contact entry it does not show the name of the caller incoming.

"Call blocked" refers to the phone system caller ID name; this has nothing to do with the Fax function of the HP6310. Some callers block their name from showing up on your phone's call ID display.

Don't you attracted by such beautiful painting? It's not only a beautiful painting, but also a cell phone blocker.

caller id wont work and incoming calls wont display

I was using this site while trouble shooting this in the US...
If the customer has DSL with filters in the same system go back to the NID and Isolate the DSL,
test the caller id and call waiting caller id. If this works you have Data Bleed coming from the DSL.
Make sure there are not two sets of filters on the line. Tjis customer had a filter with the DSL modem.

Doing this we just fixed an on going problem for a field tech who was the second callout on a customer issue.

Your M7310 phone does not have caller ID. The phone system can have caller ID and there are a few different options you could have for phone system and caller ID packages. You should try to find out which Nortel phone system you have and possibly what type of Caller ID unit.

I suspect you cannot do what you are looking for because as I mentioned, the phone itself does not have caller ID and only displays what the phone system tells it to. It is more complicated for a caller ID system to store a list of previous calls when you have multiple lines and multiple phones. Would you want to see a list of every call that has come in, just the calls that rang at your station or just the calls that rang and you answered at your station.... BUT... this may be ansered in a user guide specific to your phone system or your caller ID interface.

This is a Definity system phone. The phones themselves have nothing to do with caller ID, it's the system that handles it. The phone line has to have the caller ID service AND the phone system needs to collect the information and then display it on your phone. If you are sure caller ID service is available on the phone line you are using than this is a programming issue. Definity is a huge system and you cannot program it yourself. Someone in your building is either in charge of making simple changes in the phone system or contacting the company that makes these changes for you.