IP Office Modem 2 Expansion Kit is an internally fitted card allowing two simultanious V.90 modem calls.
IP Office Internal Daughter Cards are fitted inside the base
module of the IP403, IP406 and IP412 platforms and add voice compression
or modem features that allow businesses to easily and quickly extend
Voice over IP (VoIP) and remote access benefits to a growing number
of users.
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User Guide
