IP Telephony - NBX
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cisco 7940 sip phone

DanCarroll
Frequent Advisor

cisco 7940 sip phone

I am trying to install a Cisco 7940 IP phone on an NBX SIP unit 6.5.22.



The phone  has already been changed to a sip phone.



my question is



when  I set up the phone it will not register. It gets Ip info from dhcp and i used the proxy server as the nbx IP address.



Does this phone need to talk to a tftp server at bootup before it will work?



Any ideas or suggestions????



Thanks.



4 REPLIES
bosoxfan_1
Super Advisor

Re: cisco 7940 sip phone

One thing on the NBX side is that you have to set the password or the phone will not register.. NBX really does not have a default password, so you have to set one via the User password.. that will make the password same as the extension.



I have seen phones that will not register until this was done.



DanCarroll
Frequent Advisor

Re: cisco 7940 sip phone

Thanks.



Ill try that



DanCarroll
Frequent Advisor

Re: cisco 7940 sip phone

Update



I was able to register the phone. It will accept calls.



 It will not make calls.



I get a---- "Status 488 - unsuported content disposition type"



content disposition = session:handling = optional



How do I get rid of this??



DanCarroll
Frequent Advisor

Re: cisco 7940 sip phone

FYI



3com identifed the issue and they came up with a patch and now all is well!



Something is wrong when you have to install Cisco phones on a 3com.



It's just wrong!!!!!!!



Thank you