ata190 disconnects problems

[thomas.begley]

Hi I have a number of ATA190 that I need to get working with call manager version 9.1.2, But unless I have MTP on it will not work. the call connects then drops straight away. I need to get them working without MTP as I don't have the resource.

has anyone had this problem ? 

[George Thomas]

What do you have region settings between the ATAs and the voice gateways? It should be atleast 64k, enough to invoke G711 afaik. 

[thomas.begley]

thanks George,

                          the region is set to 64k g711alaw, it connects to a cube.