2. GERYON Concept
»Enable emergency services communication over LTE & emergency
(TETRA) networks
Central Management for overall GERYON calls control
Local Management for enabling GERYON calls in LTE
Local management for enabling GERYON calls in TETRA
PoC SERVER for Push-to-Talkover-Cellular (PoC) comms
GERYON MEDIA GW for media
transcoding in LTE & TETRA

3. GERYON System
3/9

4. GERYON Media Gateway
»Benefits
»Main functions
Enable communication
between terminals with
incompatible codecs
Context-aware management
Audio and video transcoding
SIP/IMS signalling
Profile & Resource
Management
Media Transcoding
GEMS
GMGW
Signalling
Management
Codec
information A
Terminal
A
Media
Transcoding
Codec
information B
Terminal
B

5. GERYON Push-to-Talk over Cellular Server
»Benefits
»Main functions
SIP/IMS signalling
RTCP Floor Management
Media Management
Interconnection between
cellular and TETRA networks
1-to-1 call management
1-to-many call management
GEMS
PoC Server
Signalling
Floor Control
Talk
Terminal
1
Media
Dispatching
Listen
Terminal 2,

6. Coordinator:
Mr Fidel LIBERAL
University of Basque Country
fidel.liberal@ehu.es