Polycom MGC Administrator Administrator's Manual page 129

b. Define the following parameters:
Table 3-24: SIP Settings Dialog Box Options
Field
Transport
SIP Transport Type
SIP Servers
Preferred SIP
Server
IP Address or
Name
Port
Description
Select the protocol that is used for signaling between
the MCU and the SIP proxy or the endpoints
according to the protocol supported by the SIP proxy:
• UDP – Select this option to use UDP for signaling.
•
TCP – Select this option to use TCP for signalling.
If the SIP proxy supports both protocols, select the
one that is most suitable.
If the selected protocol is TCP and the endpoint that
is behind the proxy supports UDP, the proxy knows
how to send and receive the signaling from the
endpoint in UDP, even if it is defined as TCP.
Transferring the signaling directly to this endpoint will
fail as its protocol its different from the selected
protocol.
• Off – No SIP server is used. The only dial-out
option is when conference participants are
defined by their IP addresses.
•
Specify – Select this option to manually define
the SIP server that is used for SIP
communication. This is the SIP server the MCU
approaches for all its dial out needs.
If you have selected Specify, enter either the IP
address of the preferred SIP server or its host name
(if a DNS server is used).
Enter the number of the TCP or UDP port used for
listening. The port number must match the port
number configured in the SIP server. The default port
is 5060.
MGC Administrator's Guide
3-79