Cisco Expressway Series

Purpose Src. IP Src.
ports
Protocol Dest. IP Dst. Ports
AVmedia to on-prem Lync clients Gateway
Expressway
56000-
57000
UDP Lync clients Lync client
media ports
Screen sharing from on-prem Lync
clients
Lync client
443
TCP Gateway
Expressway
56000-57000
Media from Microsoft interoperability
B2BUA towards on-premises Cisco
collaboration recipients
Gateway
Expressway
56000-
57000
UDP Deployment
dependent; bridge,
endpoint, or a
SIPproxy
Endpoint media
ports
ICEnegotiation and TURNrequests
from Gateway Expressway to
Expressway-E TURNserver
Gateway
Expressway
56000-
57000
UDP or
TCP
Expressway-E
TURNserver
UDP3478
TCP3478
(3478-3483 on
large systems)
UDPTURNmedia relays Expressway-
E
TURNserver
24000-
29999
UDP Any (reflexive or
relay) from
MSclient or Edge
50000-59999
(Edge range) or
client media
ports
TCPTURNmedia relays Expressway-
E
TURNserver
24000-
29999
TCP Any (reflexive or
relay) from
MSclient or Edge
50000-59999
(Edge range) or
client media
ports
VCS Only
Presence to Lync FEServer
Gateway
Expressway
10011 TLS Lync FEServer 5061
VCS Only
B2BUAcommunication with an
external transcoder (eg. Cisco AMGW)
Gateway
Expressway
65080 TLS External transcoder 5061
Table 19 Media Path Port Reference
37
Cisco Expressway IP Port Usage Configuration Guide