Universal Trace Analyzer
Error codes › GTPv1-C cause

GTPv1 cause 229 APN Congestion

GTPv1-C cause3GPP TS 29.060 §7.7.1

What it means

The responding node is congested for this specific APN (APN Congestion) -- a capacity/load issue.

Where you see it

In the Cause IE of a GTPv1-C response (Create PDP Context, Update PDP Context…) on Gn/Gp.

What to check

Check with the remote operator whether that APN was under heavy load at the time of the attempt.

Check which GSN sent the response: the cause belongs to that node's decision.

Got a trace with GTPv1 cause 229 APN Congestion? Drop it in the analyzer: it finds the step that really failed first, which node sent the code and what to ask the other side. Captures, test-system PDFs and vendor exports. 5 free analyses a month, no sign-up.

Analyze a trace free

Related codes

GTPv1 cause 222 APN access denied - no subscriptionAccess denied — no subscription to this APN (APN access denied – no su…GTPv1 cause 220 Unknown PDP address or PDP typeThe responding node doesn't recognize the requested PDP address or PDP…GTPv1 cause 219 Missing or unknown APNThe requested APN doesn't exist or isn't provisioned (Missing or unkno…GTPv1 cause 211 All PDP dynamic addresses are occupiedNo more dynamic PDP addresses are available to assign (All PDP dynamic…GTPv1 cause 210 Context not foundThe responding node has no record of the context this request refers t…GTPv1 cause 209 User authentication failedThe subscriber failed authentication (User authentication failed) — al…