Phantom Ringing on analog trunks 3

[cplatt7]

Just installed a new IPO v8.1.65 with 4 analog trunks on a combo card. When a caller calls in and is answered, after hanging up the phones start to ring again showing the callers same caller ID but they are not on the line and the person that answers just gets silence. I tested from my office while watching system status. I can see my caller ID ringing in and see when it is answered. When I hang up I can see it clearing and disconnect. A few seconds later I see my caller ID ringing in again but it is not me calling. I tried this on 3 of their 4 lines with the same result. Any ideas would be appreciated.

ACSS, ACIS, CCNA, CCNA Wireless, Network+, CTP

 

[mattKnight]

What happens if

1) Internal user hangs up call before outside caller (I reckon call stays hung up)

2) External caller hangs up before Internal caaler (I reckon call "regenerates")

Speak to carrier about disconnect clear signalling! Do they ahve it turned on? What timing do they use for the Loop disconnect (and set the lines to be 150ms less than this value)


Take Care

Matt
I have always wished that my computer would be as easy to use as my telephone.
My wish has come true. I no longer know how to use my telephone.

 

[cplatt7]

Matt, thanks for the reply. I tried calling them and having them hang up first. After about 20-30 seconds I saw the call ringing in again in system status. I've done the impedence match on all trunks as well as dropping the disconnect clear time to 400 ms without any luck.

ACSS, ACIS, CCNA, CCNA Wireless, Network+, CTP

 

[Westi]

that could mean that your provider does not have disconnect clear. If you have an analog gateway for your trunks they need to turn it on in there, if you have regular lines then they need to turn it on in the CO

Joe W.

FHandw, ACSS (SME), ACIS (SME)

http://convergednetworks.ca

Give a tech a solution and he will be back tomorrow to ask you the next question, teach a tech how to read the manual and he will be able to solve the problems for a life time.

 

[Telecomboy]

I think this may be a bug. Look at the thread below. Multiple people have had this issue with later releases of 8.1:

http://www.tek-tips.com/viewthread.cfm?qid=1701754

They solved it by rolling back to R8.1.43.

 

[cplatt7]

We contacted the carrier and they say that they have disconnect clear turned on but could not tell us the timer. I changed the discnnect clear timer on each of the trunks from 500 to 400 to 300 and finally to 200 without any luck. We have a technician on his way to the site to check everything there and to downgrade the software if he can't find anything else wrong. I'll let you know what happens. Thanks again for the help.

ACSS, ACIS, CCNA, CCNA Wireless, Network+, CTP

 

[cplatt7]

Our technician arrived onsite and after calling the carrier, the problem magically disappeared. Thanks again for the help.

ACSS, ACIS, CCNA, CCNA Wireless, Network+, CTP

 

[faqeel]

Let me tell you the solution to this,

These must be analog lines that you are using,

from service providers box to Expansion unit or the IPO - combo card or ATM card connection cable is faulty.

remove that and put a good cable it will fix your issue for phantom calls for sure.

 

[amriddle01]

faqeel.....just no


Avaya Implementation Qualified Professional Specialist Technical Engineer (AIQPSTE)

 

[cplatt7]

The problem returned after about a day and a half. Ended up downgrading system to v8.1.52 to see if it makes a difference. So far so good.
Faqeel, the problem was occurring on all 4 trunks. We checked and repunched all of the connections without any luck but thanks for the reply.

ACSS, ACIS, CCNA, CCNA Wireless, Network+, CTP