Cisco 6821 Administration Guide

DescriptionParameter
G729b codec name used in SDP.
Default: G729b
G729b Codec Name
G722 codec name used in SDP.
Default: G722
G722 Codec Name
G722.2 codec name used in SDP.
Default: G722.2
G722.2 Codec Name
iLBC codec name used in SDP.
Default: iLBC
iLBC Codec Name
OPUS codec name used in SDP.
Default: OPUS
OPUS Codec Name
AVT codec name used in SDP.
Default: telephone-event
AVT Codec Name
NAT Support Parameters
DescriptionParameter
Enables the phone to process the received parameter
in the VIA header.
Default: No
Handle VIA received
Enables the phone to process the rport parameter in
the VIA header.
Default: No
Handle VIA rport
Enables to insert the received parameter into the VIA
header of SIP responses if the received-from IP and
VIA sent-by IP values differ.
Default: No
Insert VIA received
Enables to insert the rport parameter into the VIA
header of SIP responses if the received-from IP and
VIA sent-by IP values differ.
Default: No
Insert VIA rport
Enables the user to use NAT-mapped IP:port values
in the VIA header.
Default: No
Substitute VIA Addr
Cisco IP Phone 6800 Series Multiplatform Phones Administration Guide
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Phone Troubleshooting
NAT Support Parameters

Cisco 6821 Specifications

General

Resolution	320 x 240 pixels
Speakerphone	Yes
Headset Port	Yes
Protocols	SIP
USB Port	No
Wireless	No
Bluetooth	No
Video Support	No
Conference Capabilities	Yes
Wall Mountable	Yes
Display	3.5-inch grayscale
Ethernet	10/100 Ethernet
Line Keys	2
PoE	IEEE 802.3af Power over Ethernet (PoE)
Codecs	G.711, G.722, G.729, iLBC
Weight	2.0 lb (0.91 kg)