Source note · Modernizing a DTMF IVR to conversational AI
Copilot Studio basic voice agents support blind transfer to a PSTN phone number and to a direct routing number; an optional SIP UUI header sends only its first 256 characters, and transfers carrying SIP UUI must use direct routing because PSTN numbers do not support SIP UUI header transfers.
Checked 2026-09-30
- Vendor
- Microsoft
- Product
- Copilot Studio basic voice agents
- Subsystem
- call-transfer
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Configure basic voice agents — Microsoft · tier 2 current vendor documentation · Transfer a call to a representative or external phone number
Cite this note
APA
WarmTransfer. (2026, September 30). Modernizing a DTMF IVR to conversational AI: source note ivr-modernization-copilot-transfer-uui. WarmTransfer. https://warmtransfer.net/knowledge/claims/ivr-modernization-copilot-transfer-uui
BibTeX
@misc{warmtransfer-claim-ivr-modernization-copilot-transfer-uui,
title = {Modernizing a DTMF IVR to conversational AI: source note ivr-modernization-copilot-transfer-uui},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/ivr-modernization-copilot-transfer-uui},
note = {Source note ivr-modernization-copilot-transfer-uui, checked 2026-09-30}
}