Go into the mail box and at the Remote Notification schedules under "more detail" use Callback&Callback Number then in the Pager Call Back # put in the extension # or the Mail #. I just recreated the SEERs code you posted with my own RN box. The very same code was giving and the Pager call back # was the only thing I remove. The call back # can only be up to 8 digits(NTP's)