Redirect of a .tel to a .com is possible
It's working! Check it out: www.nic.tel
Technically it's very easy. You only have to exchange the name server of a .tel with the name server of the registrar.
After that you can set up an URL direct just like for any other domain in the world.
Currently all .tel are using the five name servers from Telnic called *0.cth.dns.nic.tel.
Telnic has an agreement with ICANN that forbids using URL redirects to other domains than .tel.
Because of that Telnic doesn't allow changing the name servers.