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Knowledge Base

Peru--- Redes y Servicios A.C ---UC&C----U1981 ---Problem between PBX and Licea

Publication Date:  2016-05-04  |   Views:  183  |   Downloads:  0  |   Author:  m84054103  |   Document ID:  EKB1000115755


Issue Description

  Problem to connect LICEAS to U1981

Liceas is a device that allow user to use different SIM cards an use them to get a phone number allowing external users to call this "cellphone number" and then redirect it to PBX.

Liceas looks like this:


Problem Call flow:

When an external user (A)  call liceas  and reach PBX user (B) ,  User A can not listen user B, User B can listen user A


User call Liceas - Liceas reach Virtual user| Automatic voicepromt- PBX tries to reach the extension 322 dialed by user. -- User A cannot listen user B, user B can listen user A

However call flow is like this, the call is compelted:

User call liceas- user dial extension directly---Call goes throught


After analyzed the packets, U1980 and IP phone handled it correctly, but liceas device sent RTP to U1980 instead of to 7910, so need check with Liceas.


Liceas to virtual user: 7135800


U1980 send the instruccion to Liceas: send the media to IPphone ""



Liceas keep sending DTMF 2 to the U1980



External user calls directly to extension through liceas and call is completed: