Currently the threshold is fixed at 20 messages, though in future versions of the library
this might be extended to be a parameter which the user application may set.
+.** pull in common retry text
+.im &{lib}/man/retry.im
+
&h2(RETURN VALUE)
The &cw(rmr_call) function returns a pointer to a message buffer with the state set to reflect
the overall state of call processing (see Errors below).
rmr_ready(3),
rmr_fib(3),
rmr_has_str(3),
+rmr_set_stimeout(3),
rmr_tokenise(3),
rmr_mk_ring(3),
rmr_ring_free(3)