Sounds like Q.931 …
4.5.30 User-user
The purpose of the User-user
information element is to convey information between ISDN users.
This information is not
interpreted by the network, but rather is carried transparently and delivered
to
the remote user(s).
The User-user information
element is coded as shown in Figure 4-36 and Table 4-26. There are no
restrictions on content of
the user information field.
In SETUP, ALERTING, CONNECT,
DISCONNECT, RELEASE and RELEASE COMPLETE
messages, the User-user
information element has a network dependent maximum size of 35 or 131
octets. The evolution to a
single maximum value is the long term objective; the exact maximum
value is the subject of
further study.
In USER INFORMATION messages
sent in association with a circuit-mode connection, the Useruser
information element has a
network dependent maximum size of 35 or 131 octets. For USER
INFORMATION messages sent in
a temporary or permanent user-user signalling connection, the
user information field
contained inside this information element has a maximum size equal to the
maximum size of messages
defined in clause 3, that is 260 octets.
NOTE – The User-user
information element is transported transparently by an ISDN between a call
originating entity, e.g. a
calling user and the addressed entity, e.g. a remote user or a high layer
function
network node addressed by the call originating
entity.
From:
freeswitch-users-bounces@lists.freeswitch.org
[mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Rupa Schomaker
Sent: Thursday, September 16, 2010
6:57 AM
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users]
UUI related question
Can you give more information? A link to an rfc or example of how
it is used in other products?
I assume you already looked for the info in the vars that are pre-set
using hte info app? If it is in a custom header then you need to
understand a) the header name and b) how to retrieve custom headers
(on the wiki).
FS is not a proxy so
you'll have to test for the header, set a var, and copy that var into the b
leg. But let's get more info first.
On Wed, Sep 15, 2010 at 11:55 AM, seba <seba.lucero@gmail.com> wrote:
Hi list, I need to handle field UUI (User-to-User information), does
everyone knows if this field can be readed from fs?
In that case, wich field or variable name shuld I use?
Thanks in advance.
Regards.
Seba.
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--
-Rupa