Source note · Setting up a Bandwidth SIP trunk
Sending Dynamic Location Routing location by value (a PIDF-LO attachment in the INVITE) requires TCP, because the attachment is likely to make the INVITE too large for a UDP packet, and the address sent must exactly match the standardized address Bandwidth returned at validation.
Checked 2026-09-30
if you're sending location as a value, you must use TCP.
- Vendor
- Bandwidth
- Product
- E911 Dynamic Location Routing
- Subsystem
- call-time location
- Deployment
- cloud
- Region
- north-america
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- E911 Dynamic Location Routing integration and testing guide — Bandwidth · tier 2 current vendor documentation · Location by Value section
Cite this note
APA
WarmTransfer. (2026, September 30). Setting up a Bandwidth SIP trunk: source note bandwidth-sip-trunk-setup-dlr-by-value-needs-tcp. WarmTransfer. https://warmtransfer.net/knowledge/claims/bandwidth-sip-trunk-setup-dlr-by-value-needs-tcp
BibTeX
@misc{warmtransfer-claim-bandwidth-sip-trunk-setup-dlr-by-value-needs-tcp,
title = {Setting up a Bandwidth SIP trunk: source note bandwidth-sip-trunk-setup-dlr-by-value-needs-tcp},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/bandwidth-sip-trunk-setup-dlr-by-value-needs-tcp},
note = {Source note bandwidth-sip-trunk-setup-dlr-by-value-needs-tcp, checked 2026-09-30}
}