Cisco 7821 Administration Guide

DescriptionParameter
H264 HP Dynamic Payload type.
Default: 110
H264 HP Dynamic Payload
G711u codec name used in SDP.
Default: PCMU
G711u Codec Name
G711a codec name used in SDP.
Default: PCMA
G711a Codec Name
G729a codec name used in SDP.
Default: G729a
G729a Codec Name
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
iSAC codec name used in SDP.
Default: iSAC
iSAC 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
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
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Cisco IP Phone Troubleshooting
NAT Support Parameters

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)