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oozenoz · June 7th, 2006, 04:42 PM

Are all of your systems working out of the same telco switch? Are they all using the same ISDN protocol?

What a Toll or CO switch will accept is dependent on the message set selected (National ISDN is different from Nortel or AT&T custom). Likewise, within National ISDN especially the age of their switch can often limit you on the functionality you can access.

June 7th, 2006, 04:42 PM	#2 (permalink)
oozenoz PBXtech PLATINUM 300+ posts Join Date: Feb 2006 Posts: 350	Re: Multiple progress messages Are all of your systems working out of the same telco switch? Are they all using the same ISDN protocol? What a Toll or CO switch will accept is dependent on the message set selected (National ISDN is different from Nortel or AT&T custom). Likewise, within National ISDN especially the age of their switch can often limit you on the functionality you can access. __________________ - calvin