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Teledex IP250D User’s Guide SIP/MGCP Part Number 600-0480-607
CONFIGURING THE IP250D
3.3.1 MGCP Settings
This sub-page allows configuration of the MGCP server and device endpoint settings.
Enter the address and port number of the MGCP Call Agent. The address may be an IP
address or the name of the server.
If no Call Agent address is entered, the device will attempt to self-provision a Call Agent
using a DNS query. For this to be successful, ensure that the DNS settings on the device
include a DNS server address which is configured with the Call Agent address, and will
respond to the query, and the appropriate domain name of the network.
For the endpoint, configure the domain name of the device as it will appear in all MGCP
signaling transactions with the call agent. For example, if the domain name is set to
"teledex.com", configure the domain name to read: aaln/1@teledex.com
If the domain name is left blank, the device’s IP address will be used as the domain name.
For example: aaln/1@[192.168.1.100]
Enter the maximum delay before the device will send out the RSIP message after it
powers up. The actual RSIP time-out will be a random number between zero and the
number entered on this page. If you wish for the device to immediately send the RSIP
after powering up, enter the value zero.
Under the compatibility section, select which MGCP "Profile" is to be used. Finally,
select whether the MGCP stack should employ message "piggybacking" whenever
possible when sending packets. Some older call agents do not support piggybacked
messages. Press SAVE MGCP SETTINGS to save the new values. Reset the unit to have the
new settings take effect.
3.3.2 OOB Signalling Settings
This sub-page configures the handling of out-of-band telephony events signalling using
the RFC2833 protocol over RTP. First, select whether telephony events are to be sent
using RFC2833, and the destination port value which should be used for the signalling.
Select whether any voice packets are to suppressed (dropped) during the transmission of
RTP RFC2833 signalling packets. Some networks may enforce this to ensure that no
extra bandwidth is consumed by the signalling. Select whether the inband audio DTMF
is to be "squelched" (i.e. the device on the other end will not hear any audio DTMF).
Select the ABCD event transition handling mode to be used. In transition mode,
signalling packets are only sent when the ABCD event changes state. In continuous mode,
ABCD packets are continuously sent for a particular ABCD state. Press SAVE RFC2833
SETTINGS to save the new values.