ANS would be the number you are calling from and ORG would be the called number to whom you call . I test couple of scenario in my lab, by checking below you will get more clarity Scenario Calling number:5009 Called number:3002 2811-TELCO#show call active voice comp  <callID>  A/O FAX T<sec> Codec       type        Peer Address       IP R<ip>:<u                                             dp> Total call-legs: 2          1 ANS     T15    g711ulaw    VOIP        P5009    10.1XX.1XX.XX:24620          2 ORG     T15    g711ulaw    TELE        P3002 Scenario Two: Calling number:3002 Called Number: 5009 2811-TELCO#show call active voice comp  <callID>  A/O FAX T<sec> Codec       type        Peer Address       IP R<ip>:<udp> Total call-legs: 2          3 ANS     T14    g711ulaw    TELE        P3002          4 ORG     T14    g711ulaw    VOIP        P5009    10.XX.XX.XX:24624 ... View more

ISR G1 do not require license. The product family 18XX, 28XX, and 38XX remains unchanged and will not adopt the licensing,  packaging and universal image concept  which is outlined for the ISRG2 family . changing ip will not make difference  http://www.cisco.com/en/US/prod/collateral/routers/ps5854/product_data_sheet0900aecd804e773d.html Sames goes to ISR G3 4XXX its RTU honor based. http://www.cisco.com/c/en/us/td/docs/routers/access/sw_activation/SA_on_ISR.html ... View more