I have just installed a BCM 200 with a PRI circiut, and the customer has decided to reuse 3 old ATA adapters for their fax machines. The ATA's work on 1 or 2 page faxes, but anything above 4 pages the fax disconnects, and says the line is in use. Is there a ATA issue where this occurs? Or is there a setting in Unified Manager to extend how long a ATA can be connected? I have already set the ATA adapters to Telephone instead of Modem under ATA settings, is there anything else to do?