Understanding the IP Phone Registration Process презентация

2002 12:56:28 P00305000301.sbn
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3 317171 Mar 1 2002 12:56:06 CP7905040000SCCP040701A.sbin
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7 47904 Mar 1 2002 12:56:54 S00103020002.bin
8 301298 Mar 1 2002 12:56:56 ATA030100SCCP040211A.zup
9 496521 Mar 1 2002 12:57:22 music-on-hold.au
10 1908762 Mar 1 2002 12:56:54 P00503010100.bin
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33 307067 Mar 1 2002 12:56:02 CP79050101SCCP030530B31.zup

Firmware

Installed in flash RAM with the Cisco CallManager Express software or individually, as needed, on a per-Phone basis
Served up by the TFTP server on the Cisco CallManager Express router
Uses the command tftp-server flash:firmware-file-name

12:56:28 TERM70.DEFAULT.loads
2 616 Mar 1 2002 12:38:00 TERM70.6-0-2SR1-0-5s.loads
3 988400 Mar 1 2002 12:56:06 jvm70.602ES1R6.sbn
4 713081 Mar 1 2002 12:56:10 jar70.2-8-0-104.sbn
5 1796866 Mar 1 2002 12:56:22 cnu70.62-0-1-6.sbn

Firmware for the 7970G and 7971G-GE

Five firmware files required for the 7970 and 7971G-GE
Installed in flash RAM with the Cisco CallManager Express software or individually, as needed
Served up by the TFTP server on the Cisco CallManager Express router
Uses the command tftp-server flash:firmware-file-name
Uses the command load firmware-file-name

  2000
 
  10.15.0.1
 
 
 
 
 
  {Jan 01 2002 00:00:00}
  P00303020214
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  English_United_States
  en
 
  United_States
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  http://10.15.0.1/localdirectory
 
 
 
 
 
 

SEPAAAABBBBCCCC.cnf.xml*

*AAAABBBBCCCC = the MAC address

model="IP Phone 7940">P00303020214
P00303020214

Default XML File

XMLDefault.cnf.xml

Notice that there is no ATA or 7914.

model="IP Phone 7940">P00303020214
P00303020214

There is no 7914 in the XMLDefault.cnf.xml file.

The 7914 Expansion Module cannot auto-register.
The 7914 Expansion Module requires the use of the type command, which is entered by the administrator.
All other valid devices are recognized automatically by the Cisco CallManager Express system.

Power

Step 1 - Switch sends an FLP

Step 3 - Power is applied

FLP

FLP

Step 4 - Link is detected on switch port

Step 6 - Amount of needed power is conveyed through CDP from IP Phone to switch

CDP

Step 5 - IP Phone boots up

Needed Power

Step 2 - Phone returns FLP to switch because of a completed circuit

– Constantly sends DC current

Step 3 – 25 ohms of resistance detected

DC

DC

Step 4 – Low power mode initiated (6.3W)

Step 6 - Amount of needed power is conveyed through CDP from IP Phone to switch

CDP

Step 5 – Cisco IP Phone boots up

Needed Power

Step 2 – 25 ohms of resistance

to the IP Phone.

Step 8 - The IP Phone initializes the IP stack and sends a DHCPDISCOVER broadcast message.

Step 9 - The DHCP server hears the DHCPDISCOVER message, selects an IP address from the scope, and sends a DHCPOFFER.

CDP

DHCPDISCOVER

DHCPOFFER

IP Address, Subnet Mask, Default Gateway, and TFTP Server (option 150)

Broadcast

Voice VLAN

DHCP Server

DHCP Relay

or

Phone Bootup: Cisco IP Phones 7970G and 7971G-GE, Standard-Based PoE (Cont.)

obtained through DHCP to the IP stack.

Step 11 - The IP Phone looks for an alias named SEPAAAABBBBCCCC.cnf.xml (where AAAABBBBCCCC is the MAC address). If the alias is found, the IP Phone will register.

Cisco CallManager Express is the TFTP server.

SEP000F2470AA32.cnf.xml file

TFTP Request for the SEP000F2470AA32.cnf.xml file

MAC 000F.2470.AA32

If no SEP XML file is found, go to Step 14.

Phone Bootup: Known IP Phone

firmware version is different from the version specified in the SEPAAAABBBBCCCC.cnf.xml file, firmware is downloaded from the TFTP server.

Cisco CallManager Express is the TFTP server.

TFTP Request for Firmware, If Needed

Step 13 – The IP Phone reboots if the firmware was updated.

MAC 000F.2470.AA32

Firmware File

to Cisco CallManager Express, but without any assigned extension. No calls can be placed or received, and a SEP file will be created on the Cisco CallManager Express router.

Step 14 - If no SEP XML file is found, the IP Phone downloads the XMLDefault.cnf.xml file from TFTP server.

Cisco CallManager Express is the TFTP server.

XMLDefault.cnf.xml file

TFTP Request for the XMLDefault.cnf.xml file

Unknown IP Address with MAC 000F.2470.AA32

Step 15 - If automatic assignment is enabled or the phone has been configured, then the new IP Phone registers to Cisco CallManager Express and is given an extension number.

or

it boots up.
The IP Phone uses TFTP-DHCP option 150 to download during registration.
The IP Phone uses its MAC address as part of a created file name to download firmware and configurations and uses the obtained IP address to register with the Cisco CallManager Express router.