Ascend Archive
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Re: (ASCEND) Callback Problems



> All Ascend products have the same problem. They can't handle german callbacks over
> D-Channel. We have had several open Tickets concernd this problem - but no solution.

Yes, this problem really sucks. It seems to be around a verry long time now.

> The Callback doesn't only work with Piplines. More! The callback mechanism doesen't work
> with any other device in Germany. (Bintec Brick XS,...) We'll still looking for answers. 

That is not exactly true; we got it working immediately with a Zyxel Prestige-128, calling
back to our MAX-1800. The Zyxel authenticates the call with CLID, drops it and calls back
- no problems at all. The Max still runs on 5.0A. Both devices connect to a standard
Euro-ISDN from German Telekom, which is DSS1.
The Problem does exist for us only with Pipelines on the customer side (no Bricks tested yet).

> I think, only a new implemntation by ascend for D-Channel Callback would solve this 
> old problem or has anybody working this in Germany ? Let me know!

It even does work for us with a Pipeline-50, but we had to configure the switchtype as
JAPAN, a nice tip from this list. But since this was reported to work only "most times",
there still is a need for a fix.
The implementation of NET3-switchtype seems not to be compatible with local ISDN in
respect to CLID, especially combining Max <-> Pipeline. The calls are not dropped but
time out, as reported by others on the list.

Ralf


           Ralf Niederhuefner - hostmaster@prolink.de
                  System Manager , Hostmaster
                PROLINK GbRmbH - info@prolink.de
  ----------------- Contrib.Net PoP Freiburg -------------------
                      http://www.prolink.de

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