Hello! Recently I posted a question about an installation I have that was 
experiencing glare problems. The solutions presented were to use inverse 
inbound and outbound line groups and to use groundstart signalling. As it turns 
out, the Sangoma A400D card that is in use does NOT support groundstart. I've 
confirmed this with a Sangoma engineer and their support staff. I've also read 
that Digium products do not support groundstart signalling. Since glare is a 
common problem with analog PBX systems, it would make sense that groundstart is 
a common signalling type. Why do the major manufacturers not support this? If 
you're using groundstart, what hardware are you using? Thank you!

Tim Nelson
Systems/Network Support
Rockbochs Inc.


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