Problem with IP phone booting.

Unanswered Question
Jul 11th, 2009
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I am using a call manager 6.1. My call manager IP address is I am using two subnets for IP phones. One is in the range 172.19.100.x and other in 172.19.101.x. The problem I am facing is that when I connect an IP phone in the 101.x range, the phone is not booting up. It shows configuring IP, then configuring CM listand then TFTP retry. Again the process repeats but does not boot up. The ip phones connected in the range 100.x shows no problem.

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KonradStepniewski Sun, 07/12/2009 - 03:51
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I would check your firewall or routing between 172.19.101.x and CM

It can be VLAN problem as well but for sure phones can not reach CM or TFTP address from DHCP is wrong.

acharyr123 Sun, 07/12/2009 - 09:53
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Where are you creating DHCP pools for the IP Phones.....Plz make sure the 2nd DHCP pool also has TFTP address in the pool....Plz look into the sample config below:

ip dhcp pool IP-PHONES



option 150 ip ---CCM Publisher IP



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