Cisco 7821 Administration Guide

Vertical Service Announcement Codes
DescriptionParameter
Defaults to blank.Service Annc Base Number
Defaults to blank.Service Annc Extension Codes
Outbound Call Codec Selection Codes
DescriptionParameter
Makes this codec the preferred codec for the
associated call.
Defaults to *017110.
Prefer G711u Code
Makes this codec the only codec that can be used for
the associated call.
Defaults to *027110.
Force G711u Code
Makes this codec the preferred codec for the
associated call.
Defaults to *017111
Prefer G711a Code
Makes this codec the only codec that can be used for
the associated call.
Defaults to *027111.
Force G711a Code
Makes this codec the preferred codec for the
associated call.
Defaults to *01722.
Only one G.722 call at a time is allowed. If a
conference call is placed, a SIP re-invite message is
sent to switch the calls to narrowband audio.
Prefer G722 Code
Makes this codec the only codec that can be used for
the associated call.
Defaults to *02722.
Only one G.722 call at a time is allowed. If a
conference call is placed, a SIP re-invite message is
sent to switch the calls to narrowband audio.
Force G722 Code
Makes this codec the preferred codec for the
associated call.
Prefer G722.2 Code
Makes this codec the only codec that can be used for
the associated call.
Force G722.2 Code
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
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Cisco IP Phone Troubleshooting
Vertical Service Announcement Codes

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)