Cisco 7841 Administration Guide

DescriptionDefaultField Type
or Choices
Field
Enter a predefined DHCP VLAN option to learn the voice VLAN
ID.
When you use a VLAN ID with CDP, LLDP, or manually select
a VLAN ID, that VLAN ID takes precedent over the selected
DHCP VLAN option.
Valid values are:
• Null
• 128 to 149
• 151 to 158
• 161 to 254
Default value is null.
Cisco recommends that you use DHCP Option 132.
DHCP VLAN option
Cisco IP Phone 7800 Series Multiplatform Phones Administration Guide
40
Cisco IP Phone Installation
Network Configuration Fields

Cisco 7841 Specifications

General

Ethernet Switch	Yes
Lines	4
Headset Port	Yes
Wall Mountable	Yes
Display	3.5-inch grayscale display
Audio	Wideband audio
PoE	IEEE 802.3af
Speakerphone	Full-duplex
Ethernet Ports	2 x 10/100/1000
Headset Jack	RJ9
Protocols	SIP
Codec Support	G.711, G.722, G.729, iLBC
Mounting	Desk or wall
Weight	1 kg