[Asterisk-Users] I got it (was: Cisco 7940 with asterisk)

[Siggi Langauf]

Hi Jeff,

On Wed, 21 Jan 2004, Jeff Gustafson wrote:

> 	Kewl,  I was apparently trying to use older chan_sccp code which didn't
> work.
> 	Okay... just tried your new code.  The phones keep resetting:

To be fair, one should mention that chan_sccp is actually hosted at

http://www.zozo.org.uk/pages.shtml?page=sccp

Unfortunately, Theo's computer is currently dead, so we've setup a copy of
chan_sccp CVS in order to try and get the 7920 WLAN phones running. So the
version from http://www.lambda-solutions.de/7920/ is in quite a state of
flux, but does work somewhat with the 7920...

> "Error Verifying Config Info"
> then
> "Registering"
[...]
> 	Any ideas?

Sure: Remove the SIPDefault.cnf.xml file from your TFTP server!
It's not required, and unless you understand what it's good for, it will
keep your phone rebooting in an infinite loop.

If your phone has some stale CallManager settings that are preventing you
from using it, just follow these steps:

1) make sure you have a DHCP server on your network that will assign the
   phone an IP address, network mask, DNS server and default router
   It should also assign the address off your _Asterisk_ server as
   TFTP server (DHCP: "next-server")

1a) If you cannot setup the DHCP to provide that TFTP server, make sure
    you have a host (IN A or CNAME) named "ciscocm1" in your local DNS
    zone thet points to your Asterisk machine.

2) erase the stale configuration from your 7940 phone:

   - unplug ethernet (but keep power plugged)
     If you have PoE: you'll have to do the remaining steps quickly, or
     else the phone will interrupt you by rebooting

   - Press "settings"

   - type on the keypad: * - * - # - 3
     (The "**#" part will unlock the settings, unless they are already
      unlocked. You can verify the little lock symbol in the upper right
      corner of the settings menu: there should be a tiny hole in the bail)

   - Select option "Erase Configuration" by scrolling down and pressing
     the "Yes" soft button when you reached it
     (My 7940 has it at position 33, so you can type "33" on the keypad to
      get there quickly, YMMV)

   - press the "Save" softkey and then back out of the setup.
     => the phone should reboot, get settings from DHCP and register to
        your asterisk, unless you have some wrong config files on the TFTP
        server, of course...

HTH,
	Siggi