Source note · SIP call forwarding and routing loops

Cisco's IOS/IOS XE call-routing technote uses debug voip ccapi inout and debug ccsip messages to see dial-peer matching and SIP signalling for a call.

Checked 2026-09-25

Vendor: Cisco
Product: Cisco Unified Border Element
Subsystem: troubleshooting
Deployment: on-premises
Region: not restricted
Release range: current as of 2026-09-25
Checked: 2026-09-25

Sources

Understand IOS and IOS XE Call Routing — Cisco Systems · tier 2 current vendor documentation · Troubleshooting / debug references

Cite this note

APA

WarmTransfer. (2026, September 25). SIP call forwarding and routing loops: source note sip-forwarding-loops-ios-trace-debugs. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-ios-trace-debugs

BibTeX

@misc{warmtransfer-claim-sip-forwarding-loops-ios-trace-debugs,
  title  = {SIP call forwarding and routing loops: source note sip-forwarding-loops-ios-trace-debugs},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-ios-trace-debugs},
  note   = {Source note sip-forwarding-loops-ios-trace-debugs, checked 2026-09-25}
}

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