I am running * 1.0.9/E1 PRI line with telmex/16 FXS phone clients and after succesfull running for almost 4 hours, suddenly, SIP phones loss registration and begin to reregister as if they were rebooted. No Unregister messages logged, nor level 2 link lost. Calls regarding this UACs, of course, falls down , prior sending "Maximum retries on call..." message. I looked for a SIP problem but SIP debugging seems not to put any light on it. My questions: 1) Can a misconfigured/misfunctioning client make asterisk drive mad with SIP parsing? 2) Is there a reported bug or situation producing this anomalies? Thanks in advance Oscar Carriles -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.375 / Virus Database: 267.15.6/257 - Release Date: 10/02/2006