Received Digits, Prime Set and Line Assignment question 1

[dhos]

Concept question regarding DID numbers over a T-1 or PRI:

Since assigning the received digits and prime set in a target line is all that is strictly necessary to have calls to a DID ring on a set (or maybe xfer to a set is more accurate), what's the point in further configuring the target line on a line appearance button for that set?

I know that by assigning the target line you can then accomplish pre-display CID, and I discovered this is also necessary for call forwarding to an external number to work, but it seems somewhat redundant to have both a prime set and a line appearance.

Would someone take the time to explain the conceptual difference between configuring a prime set for a target line, assigning a target line to appear on a set, and why you do one or the other or both?

Seems like a waste of a button to me...

Thanks in advance!

 

[senk1s]

prime set is like the primary set or last resort set.
if all else fails it looks for the prime (if DRT prime is yes)
if you dont put a prime DN, but assign a line to the set it'll still work as long the set works fine.
if you dont assign the line to the set ... the call rings at teh set after the drt timer ...

if you dont want to waste a button assign the line as ring only

 

[dhos]

Thank you. If I set the target line as ring only, will external call forwards and caller-id pre-display still work or does the line have to appear for those?

I appreciate the explanation.

Do you normally configure the operator set as the prime set, or continue to program prime set to be the user's phone?

 

[Dmacnumberfour]

dhos,
In my experience with DID's a lot depends on what model phone is at the extension. If you have for example a 7208 or above and you set it to ring only make sure you have at least 2 intercom buttons assigned to the extension. That way if a second call comes in on the DID it will appear on the second I/C button and the user can pickup that call if their on another call. With a 7100 set you should set the prime to none so a second call in can get to their voicemail if they are currently on a call. You can't assign a second I/C button to a 7100. If any of this is wrong anyone feel free to correct.
Dmac,

 

[senk1s]

dhos,
is there are specific problem you are trying to address or are you trying to 'understand' how this works?

 

[dhos]

senk1s-

My specific problem was external call forwarding which didn't work unless I assigned the target line for the DID the caller was dialing to the set being forwarded.

Now I just want more insight into prime set vs target line appearance and what circumstances you use one vs the other or both or when not to use one.

 

[senk1s]

ext call forward is supported from 4.1 and above. if you are at a s/w release better than that, then you dont need appr and ring, ring only is sufficient.
if you doing a line redirect, then you need an apperance

prime set is generally the same set as the DID, if you set it to the operator, then the call goes to the operator after the DRT time

 

[bkrike]

I agree with Senks. The only caveat is if you are using 4.1, ring only call fwd was sometimes buggy, while line redirect seemed to work on the systems I dealt with (regarding PRI only) -you have not mentioned your version.

 

[dhos]

I can only get external forward and pre-display of CID to work when the target line appears and rings. If I set the target line to appear only or ring only, then the CID doesn't display unless you use feature 811, and if you forward the set to an external number the call goes through but you either get a provider error code "call can't be completed as dialed" or the call completes but drops after 1-2 seconds. I would trouble it with the provider (CBeyond) but it's just as easy to make the target line appear and ring both.

The system is MICS 6.1

 

[senk1s]

caller and called ID :they are programmed under telco features under terminals and sets

how do u forward using feature 4/ call fwd button?

 

[dhos]

I believe I have the caller and called-id programmed right, it does display with feature 811 or if the target line appears and rings, then it shows up immediately.

For external call forward, feature-4, then the telephone number (we have local area codes, as well as '1' as routing codes to route 001 which is PRI-A, no digits are absorbed). The dial string is the same as if you dialed it directly. Again if the target line appears and rings, the call is forwarded to the external number correctly. Weird.

 

[bkrike]

If you are happy with it working that way then you are good to go. But, if you do want to free up the button a qualified Nortel tech could get it to work as it should (CLID and forwarding on ring only) Sometimes with PRI things will work strangely unless programming is spot on.