Some or all VoIP (SIP) invites are being dropped due to "242 Packet dropped - failed processing"

Publisher

SonicWall

URL

https://www.sonicwall.com/support/knowledge-base/some-or-all-voip-sip-invites-are-being-dropped-due-to-242-packet-dropped-failed-processing/kA1VN0000000O8o0AE

Published

2020-03-26

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

SonicWall website terms; no-redistribution; short excerpts and locators only

Source notes citing this source

• SonicWall documents that SonicOS 5.8 and later drops fragmented SIP over UDP, logging 242 Packet dropped - failed processing. in context
• SonicWall's fix for dropped fragmented INVITEs is to shrink SIP messages below MTU by removing unnecessary headers, or to move signalling to SIP over TCP. in context
• In the SonicWall case, calls from external sources worked while some internal calls failed, because only the larger internal INVITEs were fragmented. in context

Cite this source record

APA

WarmTransfer. (2020, March 26). Some or all VoIP (SIP) invites are being dropped due to "242 Packet dropped - failed processing". WarmTransfer. https://warmtransfer.net/knowledge/sources/sonicwall-kb-sip-invites-dropped-242

BibTeX

@misc{warmtransfer-sonicwall-kb-sip-invites-dropped-242,
  title  = {Some or all VoIP (SIP) invites are being dropped due to "242 Packet dropped - failed processing"},
  author = {{WarmTransfer}},
  year   = {2020},
  url    = {https://warmtransfer.net/knowledge/sources/sonicwall-kb-sip-invites-dropped-242},
  note   = {SonicWall, accessed 2026-10-02}
}