TA-10/20 is named as traffic antenna cable vs GTM known as traffic receiver cable:

https://support.garmin.com/support/searchSupport/case.faces?caseId=%7B1523cad0-34d1-11de-76c5-000000000000%7D

P.S. Neil - why is Russian local page for quote. You have bought your Garmins in Russia? And you do not fear the real brown bear behind the counter. It is very cool!!! I was heared that kangaroo is not pussycat too. But we are going for Garmin in Australia if we could have possibility