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Oracle Session Boarder Controller: T.38 fax relay fails (Doc ID 2576837.1)

Last updated on JANUARY 27, 2020

Applies to:

Net-Net OS - Version S-Cz7.2.0 to S-Cz7.4.0 [Release S-Cz7.0]
Information in this document applies to any platform.

Symptoms

 When T.38 is supported on both sides (sender and receiver), SBC6300 simply relays T.38/UDPTL packets.
Fax works on 740m2.

As soon as an upgrade is done to 8.1m1p9, fax fails to work (Fax handshaking fails).

While fax call is on-going, the below command shows one trans-coding session from T.38 toT.38.

sd14# sh xcode codec
07:57:10
System capacity: 60000 sessions
--- Sessions ---
Current Maximum
======= =======
Total Active: 1 1
T.38-T.38: 1 1

 

Changes

 No change just the upgrade causes this to fail

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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