Source note · SIP call forwarding and routing loops
In Expressway X15.2, hop counts can be set from 1 to 255 (default 15), are decremented by one on each forward, set the Max-Forwards field for SIP, and the search fails when the count reaches zero.
Checked 2026-09-25
When the hop count reaches 0, the request will not be forwarded on any further and the search will fail.
- Vendor
- Cisco
- Product
- Expressway
- Subsystem
- dial plan / hop counts
- Deployment
- on-premises
- Region
- not restricted
- Release range
- X15.2
- Checked
- 2026-09-25
Sources
- Cisco Expressway Administrator Guide (X15.2) - Dial Plan and Call Processing — Cisco Systems · tier 2 current vendor documentation · Hop Counts section
Cite this note
APA
WarmTransfer. (2026, September 25). SIP call forwarding and routing loops: source note sip-forwarding-loops-exwy-hop-range. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-exwy-hop-range
BibTeX
@misc{warmtransfer-claim-sip-forwarding-loops-exwy-hop-range,
title = {SIP call forwarding and routing loops: source note sip-forwarding-loops-exwy-hop-range},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-exwy-hop-range},
note = {Source note sip-forwarding-loops-exwy-hop-range, checked 2026-09-25}
}