Hunt group, where every 20 seconds caller moves on to next extension

<action application="bridge" data="
[leg_timeout=20]${sofia_contact(agent/5770@ccc-prod-fs1.objectbrains.com)}|
[leg_timeout=20]${sofia_contact(agent/5771@ccc-prod-fs1.objectbrains.com)}|
[leg_timeout=20]${sofia_contact(agent/5772@ccc-prod-fs1.objectbrains.com)}|
[leg_timeout=20]${sofia_contact(agent/5773@ccc-prod-fs1.objectbrains.com)}"/>



escalating ring group that would start ringing 5770, in 20 seconds it would start ringing 5771, then at 40 seconds adding 5772, then at 60 seconds adding 5773

<action application="bridge" data="
[leg_timeout=30]${sofia_contact(agent/5770@ccc-prod-fs1.objectbrains.com)},
[leg_timeout=40,leg_delay=20]${sofia_contact(agent/5771@ccc-prod-fs1.[leg_timeout=40,leg_delay_start=20]${sofia_contact(agent/5771@ccc-prod-fs1.objectbrains.com)},
[leg_timeout=60,leg_delay=40]${sofia_contact(agent/5772@ccc-prod-fs1.[leg_timeout=60,leg_delay_start=40]${sofia_contact(agent/5772@ccc-prod-fs1.objectbrains.com)},
[leg_timeout=90,leg_delay=60]${sofia_contact(agent/5773@ccc-prod-fs1.[leg_timeout=90,leg_delay_start=60]${sofia_contact(agent/5773@ccc-prod-fs1.objectbrains.com)}"/>