Specifications

Chapter 4 - MGCP Protocol Features Call Agent Information
62
Mediatrix 4100
Call Agent Information
The Call Agent is the server that sends the proper information to the Mediatrix 4100 unit and manages calls
from and to the unit.
Configuration Source
The Mediatrix 4100 must know the IP address or FQDN and port number of the Call Agent. You can assign
these information to the Mediatrix 4100 through a DHCP server or manually enter them yourself with the static
variables.
DHCP Configuration
Using the DHCP configuration assumes that you have properly set your DHCP server with the relevant
information. See “Chapter 3 - IP Address and Network Configuration” on page 41 for more details.
 To use DHCP-assigned information:
1. In the ipAddressConfig folder, locate the mgcpCASelectConfigSource variable (under the
ipAddressConfigMgcpCallAgent group).
This variable defines whether the Mediatrix 4100 must ask for its Call Agent settings through a
DHCP server or not.
2. Set the mgcpCASelectConfigSource variable to dhcp.
You can query the Call Agent’s IP address and port number assigned by the DHCP server in the
following variables (under the ipAddressStatusMgcpCallAgent group of the ipAddressStatus folder):
• mgcpCAHost
• mgcpCAPort
3. Set how you want to define the MGCP Call Agent information in the DHCP server.
See “
Vendor and Site Specific DHCP Options” on page 53 for more details.
4. Restart the Mediatrix 4100 so that the changes may take effect.
Note: You can set the domain name of the gateway that manages the endpoints in the
localHostFqdnSelectConfigSource variable. If the FQDN is not present or is blank, the FQDN is blank. See
“
FQDN Configuration Source” on page 45 for more details.
In the Unit Manager Network Administration Manual, refer to chapter Signalling Protocols Parameters, section
MGCP Configuration Window.
Table 46: MGCP Call Agent DHCP Information
To use a... Set...
vendor specific code The mgcpCADhcpSiteSpecificCode variable to 0. Set the MGCP call
agent IP address in the DHCP server inside the vendor specific sub-
option 207 (hexadecimal 0xCF).
site specific code The mgcpCADhcpSiteSpecificCode variable to any value between 128
and 254. Set the MGCP call agent IP address in the DHCP server inside
the site specific option you have chosen (it must match the value of the
mgcpCADhcpSiteSpecificCode variable in the unit’s configuration).