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configuring phones CME

How to configure phones in CME ? how to choose DN ?

for ex : 703.660.0492
Ext 492
Service Sho
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1 Solution
to enable the call manager express to accept SCCP phones use the following:
telephoney service
ip source-address x.x.x.x
max-ephone x ( number of IP Phones)
max-dn x )number of extensions)
create cnf

to create a DN:
ephone dn 1 (dual line or octeo line if you have CME 7 or none) select one based on how many calls to accept
number 492

to create phone:
ephone 1
mac address xxxx.xxxx.xxxx
button 1:1 (to associate ephone-dn 1 to button 1)

ccievoiceAuthor Commented:
Thanks for Response.

My Question is ,  for ex :- extension 494 (mac: 58BC2474F65B)this is one of our service phones. This mac address was not on the list to be reprogrammed, The phone has been changed to  EXT 492 . this needs to be changed back ASAP to the right extension of 494
ccievoiceAuthor Commented:
we are getting fast busy signal. when we make calls in CME ,how to troubleshoot this/
go under this phone and change button command if u dont know how to do it give me show run and i will give u complete commands

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