AT&T TL88102 2nd line issues

The hunting comes from the phone carrier, not the phone. Sounds like you need to report it to your carrier.

1) Can you pick up and use line 2 when line 1 is not in use?

2) Can you receive calls made directly to line 2's number?

3) Did you set up Call Forwarding-Busy on your Telephone Service account such that calls to line 1 would be forwarded to line 2 if line 1 was busy?  [The phone cannot handle this by itself, it needs help from the telephone service provider]

1. We cannot pick up line 2 and make calls when line 1 is in use, however if we use line 2 we can pick up and use line 1. (weird..)

2. I tested line 2 directly and we can receive calls directly to line 2. (This is not a published line we just have it (and need it) for rollover. (It also has VM set up so our clients can leave VM if they rolled over to that line when we are on Line 1)

3. We set up call forwarding to line 2 with the AT&T. (It was working as of yesterday)

Let me try again, with emphasis:

1) Can you pick up and use line 2 when line 1 is not in use?

I think, based on "if we use line 2 we can pick up and use line 1", that you can, but I want to be sure I'm clear on that.

When you say "unable to pick up and use Line 2..." what exactly does that mean?  What's on the display?  Is there a tone or message given when you push the button?

If you have hunting than these are most likely business lines, not residential. In addition to what @JefferMC asked what do you have forwarded to line two and why if you're using hunting?

Glad to assist you with your phone inquiry, certhand.

Thank you, spoom2 and JefferMC, for your input.

You mentioned that the problem with the phone is impacting your business. So that we can determine how to proceed, let us know if your service is under a residential or business account. For business, you can reach out to the AT&T Business Forums.

We'll be awaiting your response.

Aminah, AT&T Community Specialist

I've got a feeling you don't have hunting and you're trying to use call forward busy no answer to simulate hunting. 

Two independent lines with call forwarding-busy are usually cheaper than Es(Edited per community guidelines) (or similar) services with hunting.

@JefferMC No doubt, but we need to know what they have and how they're using it and if they are using call forwarding we need to know if they have digital service since you can't use call forwarding busy no answer with a POTS line. I love it when you have to dig out the information.