Configure SIP Normalization Script in CCM

Publisher

Cisco Systems (TAC)

URL

https://www.cisco.com/c/en/us/support/docs/unified-communications/unified-communications-manager-callmanager/213516-configure-sip-normalization-script-in-cc.html

Published

2018-07-26

Updated

unknown

Accessed

2026-09-25

HTTP status

200

License

Cisco copyright; all rights reserved; no-redistribution; short excerpts and locators only

Source notes citing this source

• The TAC troubleshooting checklist advises checking script syntax with any external Lua compiler and checking script direction, message type and logic against the developer guide. in context
• Cisco's example scripts define message handlers as functions on a module table, named by direction and method, for example M.inbound_INVITE(msg) and M.outbound_INVITE(msg). in context
• Cisco's TAC examples manipulate headers with msg:getHeader, msg:modifyHeader, msg:removeHeader and msg:addHeader, for example removing Cisco-Guid from inbound INVITEs and adding INFO to Allow. in context
• After a script is assigned or changed, the configuration must be saved and applied and the trunk reset before the change takes effect. in context
• With trace enabled, the CallManager SDL trace logs the changes a script makes, and troubleshooting looks for Before Normalization and After Normalization markers. in context
• SDP bodies can be read with msg:getSdp() and written back with msg:setSdp(), as in Cisco's codec-line example. in context
• For a SIP trunk, the script must be applied on the trunk itself; the TAC tech note says putting it on the SIP profile instead will not work. in context

Cite this source record

APA

WarmTransfer. (2018, July 26). Configure SIP Normalization Script in CCM. WarmTransfer. https://warmtransfer.net/knowledge/sources/cisco-technote-213516-cucm-sip-norm-script

BibTeX

@misc{warmtransfer-cisco-technote-213516-cucm-sip-norm-script,
  title  = {Configure SIP Normalization Script in CCM},
  author = {{WarmTransfer}},
  year   = {2018},
  url    = {https://warmtransfer.net/knowledge/sources/cisco-technote-213516-cucm-sip-norm-script},
  note   = {Cisco Systems (TAC), accessed 2026-09-25}
}