I am using Grandstream 486 units to connect to SER which only accepts a valid login after the units have made one attempt then been rebooted. Has anyone else seen this behavior ? --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.701 / Virus Database: 458 - Release Date: 6/7/2004