I modified /etc/php.ini line 459 from memory_limit = 512M to memory_limit = 2048M and it seems to have resolved the issue. This in turn resolved an issue I was having with recordings not showing in the CDR reports from imported calls and cdr records. Thank you tm1000 for pointing in the direction i needed to resolve two issues that have been nagging at me for a couple of weeks now.
Just to be sure, is there anything I should be concerned about with making aforementioned change?