Dialogic MIB's compiling error

[Yossi Shteinagrt]

Following is the mib compile error.
Does anyone know where can I get this DLGC-GLOBAL-REG.mib file?

HP Systems Insight Manager Mib Compiler, Version 1.0
Copyright (c) 2003 Hewlett Packard Corporation

Compiling dlghwinf.mib

Processing import file: RFC1155-SMI.mib
Processing import file: RFC1155-SMI.mib
Processing import file: RFC1155-SMI.mib
Processing import file: rfc1213.mib
Processing import file: rfc1213.mib
Failed to open import file: dlgc-global-reg.mib
could not compile module DLGC-GLOBAL-REG

Failed to open import file: dlgc-global-reg.mib
could not compile module DLGC-GLOBAL-REG

Mib file compilation completed with warnings