I believe the low first ring is universal and can't be modified. You can either consider it a "feature," allowing you to answer before disturbing those around you or...here's a practical solution to help offset the first low ring by extending the time your phone rings before rolling over into voicemail.
1. On your phone, dial *#61# and click Send.
2. Some information should be displayed: number that the calls are being forwarded to and the delay before the forwarding engages.
3. Write down the number (including +1)
4. Dial **61*+1xxxyyyzzzz*11*30# and hit Send. +1xxxyyyzzzz is the number you wrote down previously, 30 is the delay in seconds. The delay can be set in 5 second increments, 30 is maximum
5. Dial *#61# to verify that the new settings are active.
Dialing *#61# as instruction 5 suggests told me that my phone forwards to voicemail after 30 seconds.
Hope this helps, and welcome jgunt!