ISDN PRI Question

[ParkView]

Can someone enlighten me on the difference between the main number of of a prime and DIDs? At my location I have what I consider to be the main number on our primes as xxx-248-xxxx. I then have DID blocks that are in the xxx-914-xxxx range. This seems strange to me but is the way it is. Is there a difference between main number and DIDs or is this main number just considered another DID to the switch? The reason I am asking is because I am programing a switch and can get DIDs to dial in fine but get a fast busy when dialing in on the main number. Even stranger to me is that when I dial out it works fine and shows the main number as the received number on my cell.

 

[johnpoole]

it is not usually a did, it can be but more often then not it's a one way inbound trunk group... that assures callers don't get a busy due to two way traffic... go to ld 21 and ltm, that may help, you will see all your trunk groups as well as a list of trunks

john poole
bellsouth business
columbia,sc

 

[GHTROUT]

Our "main listed number" npa-nxx-3500 is simply a DID in the series. It actually works from two different exchanges we have (there are duplicate ranges here and there) 3500 is defined as an LDN in our Cust Data Block

Other places to check are in LD21 REQ prt TYPE ldn and TYPE nit. The main number may be an "LDN" and the "TYPE NIT" is where you find the place LDNs would ring if you did not have an Attendant Console set up or it was not operating.




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