Cisco Systems 8851 Manual De Usuario
• How to access the voice messaging system account.
Make sure that you have used Cisco Unified Communications Manager to configure the Messages button
on the Cisco IP Phone.
on the Cisco IP Phone.
• Initial password for accessing the voice messaging system.
Make sure that you have configured a default voice messaging system password for all users.
• How the phone indicates that voice messages are waiting.
Make sure that you have used Cisco Unified Communications Manager to set up a message waiting
indicator (MWI) method.
indicator (MWI) method.
Phone Startup Overview
When connecting to the VoIP network, the Cisco IP Phones goes through a standard startup process. Depending
on your specific network configuration, only some of these steps may occur on your Cisco IP Phone.
on your specific network configuration, only some of these steps may occur on your Cisco IP Phone.
1
Obtain power from the switch. If a phone is not using external power, the switch provides inline power
through the Ethernet cable that is attached to the phone.
through the Ethernet cable that is attached to the phone.
2
(For a Cisco IP Phone 8861 in a wireless LAN only) Scan for an access point. The Cisco IP Phone 8861
scans the RF coverage area with the radio. The phone searches the network profiles and scans for access
points that contain a matching SSID and authentication type. The phone associates with the access point
with the highest RSSI that matches with the network profile.
scans the RF coverage area with the radio. The phone searches the network profiles and scans for access
points that contain a matching SSID and authentication type. The phone associates with the access point
with the highest RSSI that matches with the network profile.
3
(For a Cisco IP Phone 8861 in a wireless LAN only) Authenticate with the access point. The Cisco IP
Phone begins the authentication process. The following table describes the authentication process:
Phone begins the authentication process. The following table describes the authentication process:
Description
Key management options
Authentication type
Any device can authenticate to the access point.
For added security, static WEP encryption might
optionally be used.
For added security, static WEP encryption might
optionally be used.
None
Open
The phone encrypts the challenge text by using
the WEP key and the access point must verify the
WEP key that was used to encrypt the challenge
text before network access is available.
the WEP key and the access point must verify the
WEP key that was used to encrypt the challenge
text before network access is available.
None
Shared Key
The RADIUS server authenticates the username
and password before network access is available.
and password before network access is available.
None
PEAP or EAP-FAST
4
Load the stored phone image. The Cisco IP At startup, the phone runs a bootstrap loader that loads a
phone firmware image that is stored in flash memory. Using this image, the phone initializes the software
and hardware.
phone firmware image that is stored in flash memory. Using this image, the phone initializes the software
and hardware.
5
Configure the VLAN. If the Cisco IP Phone is connected to a Cisco Catalyst switch, the switch next
informs the phone of the voice VLAN that is defined on the switch. The phone needs to know the VLAN
membership before it can proceed with the Dynamic Host Configuration Protocol (DHCP) request for an
IP address.
informs the phone of the voice VLAN that is defined on the switch. The phone needs to know the VLAN
membership before it can proceed with the Dynamic Host Configuration Protocol (DHCP) request for an
IP address.
Cisco IP Phone 8811, 8841, 8851, and 8861 Administration Guide for Cisco Unified Communications Manager 10.5
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Phone Startup Overview