Re: [E106309] (PM) Signal "busy" but enough lines!?

Melissa Lanning (support@livingston.com)
Tue, 12 May 1998 17:16:07 -0700

Have either of you gentleman called our support line and opened a ticket on
this issue? That would be the best next step.

Thanks!

Melissa

At 10:58 AM 5/11/98 -0400, Robert Boyle wrote:
>At 03:48 PM 5/11/98 +0200, you wrote:
>>On Mon, 11 May 1998, Thomas Kinnen wrote:
>>
>>> On Mon, 11 May 1998, Xavier Mertens wrote:
>>>
>>> > The problem is that some modem users receive a busy signal when dialing
>>> > the cascade but I'm 100% sure that we still have free channels
>>> > (I asked my telco op. to check and we never go over 80% of used lines)
>>> > What can be the problem? Some defect modem cards? Telco bottleneck? ...
>>>
>>I have noticed that if you have a pm3 that isn't fully loaded with
>>modemcards the calls wont get routed to the next PRI in the cascade.
>>Instead you will receive a busy tone.
>>We therefore are forced to make shure that the pm3 that isn't fully
>>equipped with modems is last in the chain.
>>
>>In an mixed ISDN/analog setup this results in ineficcient usage of the
>>modem-cards, preferably you would like to have a pure ISDN pm3 first in
>>the chain and let it svallow all the ISDN-calls.
>
>This is because the PM3 sends a call rejection message that is different
>than what your telco needs to roll over to the next line. There doesn't
>seem to be any standard between TelCos or sometimes even between switches
>in the same TelCo. Lucent REALLY needs to add configuration parameters that
>will allow the call reject message(s) to be configured per PM3 or even
>better per line (for FX circuits) For example:
>
>Our local TelCo says that they must receive cause code 44 (Network
>Congestion Requested Channel Not Available) to roll over to the next line.
>All other cause codes will be treated as a busy signal and answered with
>the "All circuits are busy" voice message. The PM3 now sends cause code 17
>(User busy) when it is out of modems which results in the all circuits are
>busy message. This is NOT good. :( Anyone else having this same problem?
>
>-Robert
>
>Robert Boyle Server Co-location,
>Garden Networks Internet Access,
>50 Diller Ave Development & Consulting
>Newton, NJ 07860 (973)300-9211 Ext.103
>8AM-8PM Mon-Fri EST http://www.garden.net
>Lucent RABU & Software.Com Post.Office VAR
>
>
>
Melissa Lanning Lucent Technologies' Remote Access
Division
Technical Support Engineer (formerly known as Livingston Enterprises)
www.livingston.com 4464 Willow Rd
(800) 458-9966 Pleasanton, CA 94566
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