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Call can be established on eSpace, but no Video can be seen

Publication Date:  2018-01-19 Views:  93 Downloads:  0
Issue Description
Cannot view video through eSpace, but call can be esablished.

Network Topology:

internal eSpace (8751) ----SBC ----firewall ----external eSpace (5001)

Error Image:

No Image/video on Espace displayed

Alarm Information


Handling Process

1)                Call can be setup, this show that the signal is“OK” ( see the highlighted section)

DRT         After setting up call, there is no media stream available

Media stream between internal eSpace and SBC core side is up, but media stream between SBC  access side and external eSpace is down

There is no media packet between SBC access side and external eSpace

Next, we checked the port of Huawei SBC, NAT for SBC access Firewall.  

The port are correctly configured and there is NO issue with the settings. 

The problem that escalated to NO MEDIA is most probably the Firewall issue.  

The Firewall is not allowing those port to communicate in return NO MEDIA STREAM can be sent.


Root Cause

Firewall port needed to be configured accordingly in order for the MEDIA STREAM to take place


Port need to be configured for media stream. Port configuration of media stream can be refer according to below;