DID Discussion

[jerryreeve]

this thread is a sidebar of thread799-562095

I had made a comment:
"my memory of wink is that it is received from the CO as a "ready request" then the norstar sends a wink as a "ready to receive" wherepon the CO dumps the digits and makes the connection to the PBX, this is why, on DID calls, the KSU/PBX provides supervision tones (ringback, busy)
"
which got the following response
"
Rage2003 (Vendor) Sep 16, 2003
Jerry,

Thanks for further clarification. Please offer your comments on the following two situations, related to Branch's post.

(1) I have had sitauations where I failed to assign a target line to a set of rec. digits that resulted in a busy
signal when you call the DID. Programming a target line for
the rec. digits, even if not assigned to a ring a DN, would at least allow the line to ring. I concluded from this that assigning the rec. digits to a target line must be what triggers the Norstar to send the "ready to rec." wink.

(2) I have also failed to assign target lines to a set of rec. digits, called the DID and it rings right open. Kinda blows my theory above away, right? I would really be interested in your input- I think it is at the heart of Branch's problem.
"

the DID sequence that I remember was as follows
CO PBX
wink to pbx
wink back
digit drop
send ring to station; ringback to CO
or
busy signal to co
or
re-order to CO if unable to send call to
station.

station hangs up; send wink to CO
Drops call

My books are still pacaked up from a move so if anyone else has clarification or steps I missed please let me know. I do distinctly remember an admonision to make sure that all of the digits within a DID group were handled since FCC requirements are that DID calls do not get reorder. this was from a fujitsu class but DID is still DID.



JerryReeve
Communications Systems Int'l
com-sys.com

 

[PERRYPJ]

Your first step from the CO is not a wink it's actually a seizure then the switch sends the wink saying go ahead and sennd the digits

OLD ROLMEN WORKING ON NORTELS

 

[westcoaster]

I would agree with perrypj...
First the co goes "off hook"
then the norstar sends the wink
then the co sends the digits
if the co does not see the wink it "hunts" to the next circuit
At this point it has been my experiance that the voice path has been connected to the norstar and ringback and re order are provided by the norstar. the co no longer monitors the call.

 

[westcoaster]

just followed the other thread and noticed they were talking about t1/pri I was talking analoge...