I have an IPO500v2 R7.0 that has 6 - Phone30 modules. The client previously had a Nortel Option 81 using analog Astra phones w/ Message Waiting Lights. In order to get the lights to work I set up each "Extension" port w/ 101v. The lights started working after I rebooted the system and each module separately. This was mid-December 2011. Within the last 2 weeks lights stopped working randomly throughout. No specific module. Rebooted each module again. Some lights test ok at module but won't turn come on at desk. Any ideas? Thoughts? And no they are required to use analog. Thanks.