AWS connect documentation change

Service: connect · 2025-10-16 · Documentation low

File: connect/latest/adminguide/queues-callerid.md

Summary

Added Japanese carrier requirements for outbound calls, including details about call rejection scenarios and backup carrier behavior

Security assessment

The changes describe operational requirements for Japanese telecom carriers and failover processes, but do not address security vulnerabilities or introduce security features.

Diff

diff --git a/connect/latest/adminguide/queues-callerid.md b/connect/latest/adminguide/queues-callerid.md
index c9e3b9a05..fffde3175 100644
--- a//connect/latest/adminguide/queues-callerid.md
+++ b//connect/latest/adminguide/queues-callerid.md
@@ -5 +5 @@
-Outbound parameters: Set in queueHow outbound parameters are selectedHow to set the caller ID number dynamicallyUse E.164 format for international phone numbersHow to specify a custom caller ID number using a blockCNAMAvoid labels like "spam"
+Outbound parameters: Set in queueHow outbound parameters are selectedHow to set the caller ID number dynamicallyUse E.164 format for international phone numbersHow to specify a custom caller ID number using a blockCNAMJapanese carrier requirementsAvoid labels like "spam"
@@ -24,0 +25,2 @@ This topic explains how to set up your outbound caller ID name and number.
+  * Japanese carrier requirements
+
@@ -217,0 +220,26 @@ All existing CNAM configurations set up before March 2023, are still in place. W
+## Japanese carrier requirements for outbound calls
+
+Japanese telecom carriers only allow outbound caller ID for phone numbers that they issued. This means:
+
+  1. If you use a Custom Caller ID as your outbound caller ID, the Japanese carrier's Session Border Controller (SBC) will reject the call.
+
+  2. When a call is rejected:
+
+     * The Voice SBC automatically retries the call using our backup carrier (referred to here as Carrier B).
+
+     * Carrier B uses its own designated number (03-4520-9200) for the outbound call.
+
+
+
+
+This same failover process occurs if there are other issues, such as:
+
+  * Trunk failures
+
+  * Other carrier-side problems that cause call rejection
+
+
+
+
+In these cases, Carrier B also uses its designated number (03-4520-9200) for outbound calls.
+