Library /sys$common/syshlp/ncphelp.hlb SET, CIRCUIT, MAXIMUM RECALLS number  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Applies only to X.25 DLM outgoing Switched Virtual Circuits
 (SVCs). Specifies  the maximum number of call retries generated
 on an outgoing DLM circuit before the circuit is declared
 nonoperational.  The range of possible values for MAXIMUM RECALLS
 is 0 to 255.  The number value of 0 specifies an infinite number
 of call retries.  The default value is 100.