Telephony Cards - PRI-PRI Bouncing UP and Down

Publisher

Sangoma Technologies

URL

https://sangomakb.atlassian.net/wiki/spaces/TC/pages/52428979

Published

unknown

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

Sangoma documentation terms; no-redistribution; short excerpts and locators only

Source notes citing this source

• On Sangoma cards, wanpipemon -i wXg1 -c Ta shows physical-layer alarms, and Sangoma suggests running it under watch to see alarms change over time. in context
• 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. in context
• Sangoma names choosing NCRC4 where CRC4 is needed (or the reverse) in the FE_FRAME setting as a common cause of an E1 PRI bouncing, fixed by editing the wanpipe configuration file and restarting wanpipe. in context

Cite this source record

APA

WarmTransfer. (2026, October 2). Telephony Cards - PRI-PRI Bouncing UP and Down. WarmTransfer. https://warmtransfer.net/knowledge/sources/sangoma-kb-tc-pri-bouncing

BibTeX

@misc{warmtransfer-sangoma-kb-tc-pri-bouncing,
  title  = {Telephony Cards - PRI-PRI Bouncing UP and Down},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/sangoma-kb-tc-pri-bouncing},
  note   = {Sangoma Technologies, accessed 2026-10-02}
}