User`s guide

MGCP phone will play the call-progress tone while trying to establish a call and this
can take time. If it takes a long time, check to make sure the MGCP call agent is
running properly.
Plays error tone
The called party may not be registered with the proxy server.
Plays error tone after a long time
Call agent is not running and the MGCP phone times out before playing error tone.
This can take some time.
Voice quality is not good
The MGCP phone supports packet loss and network jitter to some extent. Above certain
levels, voice quality can deteriorate. The G.729 codec will perform better than the G.711
codec and can be selected in the configuration.
Call hold does not work properly
The call-hold feature requires cooperation from both ends and from the Call Agent. The
behavior is not defined if the other phone and Call Agent do not support the hold
feature.
Speakerphone does not work
The MGCP phone has a speaker to support one-touch dialing, not for normal
speakerphone use. The other party will hear you if you are in speaker mode but the
voice on the speaker may be poor quality.
8.4.4. Browser access
No response through browser
Check whether the MGCP phone is connected to the network and you have the correct
IP address for the phone.
To access the MGCP phone the IP address is unknown
Select the factory-default option and restart the phone. Now the phone uses factory-
default parameters and uses a known IP address.
Browser displays server-busy message
It implies that another person is configuring the MGCP phone.
Browser displays logout message
Check the user name and password.
Browser displays logout message during configuration
It the browser is idle for more than 10 minutes the MGCP phone will terminate the
session. You must restart the browser.
8.4.5. Other functions
Entered factory-default key sequence, no response
You must restart the phone.
Entered production-test key sequence, no response
You must restart the phone. The MGCP phone will exit the production test mode on the
next restart.
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