I am trying to configure my Cisco 2811 with Call Manager Express 4.3 to allow generic SIP phone registeration (as well as the standard Cisco SCCP phones). I have used the following resources to create my configuration https://www.experts-exchange.com/Networking/Telecommunications/IP_Telephony/VoIP/Q_22615518.html?sfQueryTermInfo=1+call+express+manag+phone+sip
However the SIP phones sp not register. Once of the phones I am trying to register is a GXP2020 and allthough the phone doesnt register with Call Manager Express it is still able to place calls, however it cannot recieve any calls.
Below is my relevant configuration:
voice register global
source-address 192.168.4.1 port 5060
voice register dn 1
name My Phone
voice register pool 1
id mac xxxx.xxxx.xxxx
number 1 dn 1
username user1 password mypassword
I would really appreciate your help with this one!