After searching through the archives, I am no more confused. I am using SER 0.8.14 and asterisk for voicemail. Asterisk is sending many OPTION requests to SER, which go unanswered. I saw some posts from early last year that there was an options module. However, I am unable to find this module. I also saw posts that OPTIONS is not supported by SER. Can anyone tell me which statement is true here?