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New Member

SX20 not making multisite calls

Good day,

I am having an issue using a Cisco SX20 with an ISDN link to make multisite calls.

The multisite worked 100% before the link and Endpoint software upgrades.

I have checked the unit and it still has the multisite option on.

At the moment the only way I can make 3 different calls is to manually set each

call to a different call rate and that is not the way it should work, or am I wrong?          

Everyone's tags (3)
7 REPLIES

SX20 not making multisite calls

If you could let us know the

* software versions

* how your deployment looks like

* what exactly you dial (in cases it works or fails)

* how exactly does it fail?

* the more verbose info the better, ...

Please remember to rate helpful responses and identify

VIP Green

Re: SX20 not making multisite calls

What is your default call rate set to?  At a guess, it'd be set to something high, so the first call uses up all your available ISDN channels, so there are none left to make the 2nd call.

Does it work as you'd expect if you configure the detault call rate on the SX20 to say 128 or something lower than what you have available?

Wayne
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New Member

SX20 not making multisite calls

* software versions  - Endpoint TC6.1.1 / ISDN link IL1.1

* how your deployment looks like - SX20 connected via lan cable to the ISDN link and the link connected to the 4 lines.

* what exactly you dial (in cases it works or fails) - I dial at 512k and thats the only call I can do. But I can make the 3 calls at 128k.

* how exactly does it fail? - It says call disconnected.

New Member

SX20 not making multisite calls

Hi All, I work with Ryan,

Should the SX20 with ISDN link not automatically downspeed the calls like the MXP units do when adding participants to a multisite call?

SX20 not making multisite calls

I would have thought it would not downspeed ISDN calls, so it sounds like an ok behavior.

Ryan: which software versions did you use when it worked?

Did you try if TC6.2 behaves different?

Please remember to rate helpful responses and identify

New Member

SX20 not making multisite calls

I have not installed TC6.2.

It did work with TC5 on the endpoint and IL1.0 on the ISDN link.

I will go to site and try TC6.2.

Will let you know as soon as I am back.

New Member

SX20 not making multisite calls

Hi there, quick report.

I installed the new software TC6.2 and no luck.

What about reverting back to the old software for the endpoint and isdn link?

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