topic The above process is in Unified Communications Infrastructure

IP PHONE BOOTING PROCESS

Saravana Boobathy — Tue, 19 Mar 2019 16:11:12 GMT

HI,

Below IP phone booting process is same for all IP phone or only for Cisco IP Phone....

IP Phone Startup Process

Thanks in Advance.

Rg,

KSB

1. True for all IP Phones

Vivek Batra — Fri, 13 Feb 2015 05:42:46 GMT

1. True for all IP Phones except other phones will use standard PoE IEEE 802.af to get power from switch.

2. With respect to loading firmware, true for all standard IP Phones.

3. Since Cisco switches use propriety CDP protocol, other standard phones need to configure manually with Voice VLAN information or may be vendor specific.

4. With respect to getting information through DHCP, true for all standard phones.

5. Auto-configuration protcol may vary from vendor to vendor, may use TFTP, HTTP/HTTPS, FTP etc.

6. True for all standard phones then to register with their respective call manager.

The above process is

Terry Cheema — Fri, 13 Feb 2015 05:48:51 GMT

The above process is specifically for Cisco phones. For other IP phones depending on the vendor the process on a high level is similar but not same. Cisco phones use CDP non-cisco phones will use LLDP. Cisco phones use use tftp option 150 non-cisco phones will need a different option (for example 60 for Avaya i think).

-Terry

Check below videoshttps:/

Mohammed Khan — Fri, 13 Feb 2015 06:22:32 GMT

Check below videos

https://supportforums.cisco.com/blog/12088286/troubleshooting-ip-phone-registration-cucm

HTH,

Regards,

Mohammed Noor

HI, As per you explanations,

Saravana Boobathy — Fri, 13 Feb 2015 06:23:33 GMT

HI,

As per you explanations, Except VLAN Discovery and Configuration server (Firmware) all are same..

i've googled for the same and found that, for Polycom devices are using Opt 160 (Primary) and Opt 66(Secondary) to get a configuration files from TFTP/FTP.

Thank you so much for your replies...

Rg,

KSB

Small addition to the other

Gordon Ross — Fri, 13 Feb 2015 08:23:26 GMT

Small addition to the other posts: Many Cisco phones support both CDP & LLDP-MED for obtaining their voice VLAN.

I believe some non-Cisco switch vendors support some limited version of CDP too.

GTG

Hi Gordan, Yes... Polycom

Saravana Boobathy — Mon, 16 Feb 2015 07:15:02 GMT

Hi Gordan,

Yes... Polycom devices also support, CDP.

Rg,

KSB