the function (actually several) is there but with different prototype due to sip-router tm -- no documentation indeed and this should be fixed:

try:

t_replicate("192.168.1.1", "5050");

Basically there are several functions:

t_replicate(host, port);
t_replicate_to_udp(host, port);
t_replicate_to_tcp(host, port);
t_replicate_to_tls(host, port);
t_replicate_to_sctp(host, port);

t_replicate_to("proto", "host:port");

- the last one can have variables as parameters.