Cisco Cisco Meeting Server 2000
Cisco Meeting Server Release 2.0 : Single Combined Meeting Server Deployments
77
Figure 16: Firewall traversal for remote SIP devices using the SIP Edge component
Note: SIP endpoints or Lync clients external to the network may still need a third party device to
route SIP signaling across their firewall.
route SIP signaling across their firewall.
Table 6 below lists the ports required to be open for SIP/Lync call traversal.
Table 6: Ports to open for SIP/Lync call traversal
Link
Component
Connecting
to
to
Destination
port to
open port
port to
open port
Traffic
type
type
Traffic direction
with respect to
component
with respect to
component
Configurable
1
Edge server
(private
interface)
(private
interface)
Call Bridge
Any
unused
port, e.g.
3061
unused
port, e.g.
3061
SIP,
TLS
TLS
Incoming from Call
Bridge
Bridge
Yes
2
Edge server
(public
interface)
(public
interface)
Remote SIP
devices
devices
5061 (Note
1)
1)
SIP
TLS
(Note
2)
TLS
(Note
2)
Incoming/Outgoing
Yes
3
Call Bridge
TURN
server
server
32768-
65535
65535
Media
UDP
(STUN,
RTP)
UDP
(STUN,
RTP)
Incoming/Outgoing
No
11 SIP and Lync call traversal of local firewalls (BETA)