dwernli

Having a perplexing issue with call forwarding off PBX. I run 8700s CM 3.1, with (in this instance) a G700 LSP hanging off of it (separate network region). At the G700 site, I have a coverage path that runs as follows:
Point 1 reception
Point 2 Call answer group
Point 3 Remote call Coverage off PBX to an answering service.

Everything seems to work fine, however the call volume becomes so faint that it is no longer audible? Where is this decrease in volume coming from? In testing I have found that even if I forward the reception phone of PBX, I still see a decrease in volume?

Any Ideas?

Lecivius

Every transfer, every conference, every forward, every action takes 3-5 db away from the call. Only takes 8-10db loss to loose audio. You can also have 1-4bd loss from a cabling fault (although from your description that is not likely).

PBXtech.info

 

dwernli

What do you think about sdjusting the Loss Groups to accomdate for the all the rolling?

Lecivius

That won't do a lot. That will attenuate a call via amplification, but it is not intended to overcome a 9-15db loss. What about an AA, with a timed option to send the calls to your receptionist during business hours & the Off Prem group after hours?

dwernli

Yeah, I thought about it but they are set on a "live" person answering the phone 24/7. They are not interested in an AA at all. Not sure what the best answer is. I may try the loss group just to see if it helps even a little.

dwernli

Hope everyone had a great Holiday. I have discovered an interesting twist to this. During normal business hours, I there are no issues at all. I have had success after success. However, after 5 something changes? When I call out there after 5 the volume is very low. I have ran traces with nothing out of the ordinary?

PBXtech.info

 

Lecivius

I'm thinking from reading your post after 5 you go off net? If that is so that is another 3-5 db loss. That may be enough to finally 'push' the audio into the difficult-to-hear range.

dwernli

Yes...they go off PBX. I understand that there is a drop in volume. But how does the drop in volume relate to the time of day? This function works perfectly through the business day (8AM to 5PM). However after 5PM the volume goes down so drastically that a voice cannot be distinguished? It is crazy!!

dwernli

To be clear...it forwards off pbx during the day as well. Time of day does not change the way this particular process unfolds aside from the volume issue out of hours.

oozenoz

How are your calls being routed off-net? Do you have any time of day routing rules set up so that specific trunks are used during the day and others after 5 PM? What sort of technology are you using to route the calls?

__________________
- calvin

dwernli

I run 8700s with several G700 and G350 LSPs hanging off. I am currently at CM 3.1.4.

Calls are routed off via coverage path over a CO trunk group (call comes in trunk one and out the next available)...well until last night. I have not set up any time of day routing for this location. It is suppose to operate the same 24\7.

We have tested every CO line in the group and they all function as they should. However, last night (just to test) I routed the calls over one of our ISDN PRIs here at campus. I was not able to stay to do much testing last night so I am waiting for some results this AM.

We have tested different destination numbers.

Tested long distance vs local.

Anything else you can think to test?

Lecivius

You say the calls are forwarded off-net 24/7? Using the following vector...

Point 1 reception
Point 2 Call answer group
Point 3 Remote call Coverage off PBX to an answering service.

Yet the audio problem only occurs after hours? Does this vector chang in any way during the problem time? Do the problem calls leave the switch on the same trunk group as the Non Problem calls? How do you re-direct the calls from the daytime when this vextor works, to the problem time period? Are the problem calls treated the same aka no other vectoring inside your PBX? Are these calls delivered direct from the LEC, or are they delivered across a TIE to another PBX? The load your switch is running I don't believe is the problem. This 'sounds' more like a physical delivery problem.

dwernli

It is not a vector. It is a coverage path on the covering trunk extension. I could have vectored it but this way seemed more apt for what the endusers were requesting. Calls are recieved on any of the co trunks and sent out the first available or next local co trunk. Well that is how it was until yesterday. Yesterday I wanted to see if I had different results with an ISDN vs POTS. Still have not heard back.

colt45

The issue could well be with the "answering service". Some of these services take 8a-5p traffic locally but forward to a central site 'after hours'. This forward could be the cause of your loss problem.

If possible, change the Remote Cov Dest to be something you know is consistent 24x7, like your cell phone.

dwernli

My first assumtion was that it was the answering service. I placed several test calls as well as contacting the tech for the answering service. That turned up nothing. Funny thing you mention it, even if you forward it to your cell phone (both on the R Cov or standard call forwarding) it has the same failure. I have had to contact Avaya IP support to help. They are trying everything we have mentioned on this thread. If we find a resoultion, I will post the fix.