[HELP] Installation issues w/ Cisco 7960 SIP phones

Hi all: I’m trying to set up asterisk for the first time. I have two Cisco 7960 phones, both loaded with firmware P0S3-06-3-00 (SIP). For the moment I’m simply trying to get it so that the phones can call each other, but when I try to dial the extension for one phone from the other, I simply get a fast busy signal. I’ll show as much as I can here, sorry for a long post.

If any other files or outputs would be helpful let me know. Thanks in advanced!

Ken

Results of “sip show peers” and “sip show users”

sip.conf

extensions.conf

SIPDefault.cnf

SIP{mac}.cnf: Two of these, exactly the same except the other replaces 520 with 510, and yes I did replace {mac} with the correct macs for the phones.

dialplan.xml

bump

Make sure that NAT is enabled from your CISCO phone and play around by enabling the NAT from your extensions and disabling it.