Cisco 7821 Firmware Migration Master Guide

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The conversion process involves moving to a transitional firmware load before the final load is installed. The transitional load is where you
enter both the license file and a normal MPP target load to upgrade to. There are separate transitional loads for each migration direction. For
example, there is one firmware load for moving from Enterprise to MPP, and one firmware load for moving from MPP to Enterprise. Likewise,
each migration direction requires a different license file. The conversion direction is reflected inside the license file and in the firmware image
name.
Figure 1. Example MPP_2_ENT License File
Figure 2. Example ENT_2_MPP License File

Cisco 7821 Specifications

General

Resolution	396 x 162 pixels
Lines	2
Speakerphone	Yes
Display	3.5-inch (89 mm) monochrome display
Ethernet Ports	2 x 10/100 Ethernet ports
Power	IEEE PoE Class 1
Headset Port	Yes
Protocols	SIP
Audio Codecs	G.711, G.722, G.729, iLBC
Weight	0.9 kg (1.98 lb)