Event ID: 1021
Source: MSExchange Unified Messaging
Task Category: UMCoreThe Unified Messaging server rejected an incoming call with the ID “2ACCC6EF-E2F911E0-9286A0ED-1857E3E@10.1.1.22“. Reason: “The Unified Messaging server received “INVITE” request with an invalid SIP header “USER-AGENT” with value “”.”
That seemed strange that the USER-AGENT field would be “. so I created a sip-profile and modified the header to be “CME” instead.
router(config)#
router(config)#voice class sip-profiles 1
router(config)#request INVITE sip-header User-Agent modify “.” “CME”
then I applied the profile under “voice service voip”
router(config)#voice service voip
router(config)#sip
router(config)#sip-profiles 1
Now the calls go through. Here is the entire SIP config:
voice service voip
cti csta mode basic
no cti shutdown
allow-connections sip to sip
no supplementary-service sip moved-temporarily
no supplementary-service sip refer
fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback none
sip
session transport tcp
header-passing
registrar server expires max 300 min 60
sip-profiles 1
!
voice class sip-profiles 1
request INVITE sip-header User-Agent modify “.” “CME”