
74 Chapter 4 Installing NetVision telephones
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Keycodes
Before setting up NetVision telephones, ensure that you have enough IP client keycodes enabled
to register all the NetVision telephones you require. For information about entering keycodes, see
the Keycode Installation Guide. IP clients are distributed on a one-to-one basis with NetVision and
IP telephones, so ensure that you take your entire system into consideration.
Handset and call functions
Symbol supplies a handset user guide that describes the features on the NetVision handset and how
to use them to perform basic functions.
The Business Communications Manager NetVision Feature card explains how to use the handset
to access features on the Business Communications Manager system and provides some quick tips
for basic call functions.
The Business Communications Manager Telephony Features Handbook provides information
about how to use Business Communications Manager call features.
The Business Communications Manager NetVision Phone Administrator Guide provides
instructions for assigning features to the display list, and includes an appendix containing a list of
the features that work with NetVision handsets.
Codecs
You can specify a preferred codec for your H.323 terminals. As well you can set a specific codec
in individual handset records. This allows you to create the preferred call environment for your
NetVision-based communications. The settings you choose depend on the expected network
connection points of the handsets. If all the handsets are expected to be used within a common and
consistent network, you can use the general, default setting. However, some handsets that connect
through busy systems may need specific settings to ensure consistent voice quality.
The default codec for NetVision handsets is G.729. However, if the NetVision handsets connect
over IP trunks, the codec of the IP trunk takes precedence.
Caution: NetVision handsets experience communications problems if your system has a
NAT between the handset internet connection and the published address of the Business
Communications Manager LAN. For this reason, this configuration is NOT supported.
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