NEC UNIVERGE SV8100 System Hardware Manual page 182

Issue 7.0
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Figure 4-8 Installing the PZ-VM21
One PZ-VM21 daughter board providing InMail can be installed per system.
Refer to the Univerge UNIVERGE SV8100 System InMail System Guide for
complete set-up information.
UNIVERGE SV8100
Installing the SV8100 Blades