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I thought each IP phone when it boots up, it registers its MAC address with CME.<br />
There is no need for the Administrator to type it manually. <br />
Example:<br />
ephone 1<br />
&nbsp;mac-address aaaa.aaaa.aaaa
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I thought each IP phone when it boots up, it registers its MAC address with CME.
There is no need for the Administrator to type it manually.
Example:
ephone 1
 mac-address aaaa.aaaa.aaaa

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What I think Statically typing MAC address reason is, may be for &nbsp;CME &nbsp;reboots or IP phone reboots.<br />
<br />
on CME we configure : ephone-dn and number<br />
if we do not configure static MAC, then the ephone-dn and number can be assigned to different IP Phone when there is a reboot of either devices ....That's my Guess
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What I think Statically typing MAC address reason is, may be for  CME  reboots or IP phone reboots.

on CME we configure : ephone-dn and number
if we do not configure static MAC, then the ephone-dn and number can be assigned to different IP Phone when there is a reboot of either devices ....That's my Guess

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<div class="content wysiwyg-content">
If I am not wrong when IP phone registers with CME , we will be able to see the MAC address of the phone, by typing in CME : show ephone<br />
<br />
However I have seen Admins assigning MAC address manually :<br />
ephone 1<br />
mac-address aaaa.aaaa.aaaa<br />
<br />
What is the purpose of changing MAC addresses?<br />
<br />
Any idea ?<br />
<br />
Thank
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If I am not wrong when IP phone registers with CME , we will be able to see the MAC address of the phone, by typing in CME : show ephone

However I have seen Admins assigning MAC address manually :
ephone 1
mac-address aaaa.aaaa.aaaa

What is the purpose of changing MAC addresses?

Any idea ?

Thank

Why assign MAC Address manually to IP phone in CME

IP telephony (Internet Protocol telephony) is a general term for the technologies that use the Internet Protocol's packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN). Using the Internet, calls travel as packets of data on shared lines, avoiding the tolls of the PSTN. The challenge in IP telephony is to deliver the voice, fax, or video packets in a dependable flow to the user.

IP Telephony

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).

Voice Over IP

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.