Require:
SBC is adding empty Require: to the INVITE which is causing it to be rejected later. Would you please help me understand which part of the sip manipulation confide does that and why?
I suspect this part but I do not fully understand its purpose:
header-rule
name chk183
header-name @status-line
action store
comparison-type case-sensitive
msg-type reply
methods INVITE
match-value
new-value
element-rule
name bool
parameter-name
type status-code
action store
match-val-type any
comparison-type case-sensitive
match-value 183
new-value
header-rule
name req100rel
header-name Require
action add
comparison-type pattern-rule
msg-type any
methods
match-value
new-value
element-rule
name req100relem
parameter-name
type header-value
action add
match-val-type any