Sangoma lists four causes of a PRI bouncing up and down on its cards: a telco signalling issue, physical-layer instability, wrong clocking chosen at setup, and wrong HDLC configuration.
Checked 2026-10-02
- Vendor
- Sangoma
- Product
- Wanpipe
- Subsystem
- telephony card driver
- Deployment
- on-premises
- Region
- not restricted
- Release range
- current as of 2026-10-02
- Checked
- 2026-10-02
Sources
- Telephony Cards - PRI-PRI Bouncing UP and Down — Sangoma Technologies · tier 2 current vendor documentation · Causes list
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting PRI circuits that are down or dropping calls: source note pri-circuit-troubleshooting-wanpipe-bounce-causes. WarmTransfer. https://warmtransfer.net/knowledge/claims/pri-circuit-troubleshooting-wanpipe-bounce-causes
BibTeX
@misc{warmtransfer-claim-pri-circuit-troubleshooting-wanpipe-bounce-causes,
title = {Troubleshooting PRI circuits that are down or dropping calls: source note pri-circuit-troubleshooting-wanpipe-bounce-causes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/pri-circuit-troubleshooting-wanpipe-bounce-causes},
note = {Source note pri-circuit-troubleshooting-wanpipe-bounce-causes, checked 2026-10-02}
}