Alyed wrote: > From: http://www.voip-info.org/wiki/view/Asterisk+sip+qualify > "If you turn on *qualify* in the configuration of a SIP device in > sip.conf<http://www.voip-info.org/wiki/view/Asterisk+config+sip.conf>, > asterisk will send a SIP > OPTIONS<http://www.voip-info.org/wiki/view/SIP+method+options>command > regularly to check that the device is still online. If the device > does not answer within the configured (or default) period (in ms) Asterisk > considers the device off-line for future calls. This status can be checked > by the SIPPEER > function<http://www.voip-info.org/wiki/view/Asterisk+func+sippeer>, > and inversely this function will only provide status information for peers > which have *qualify=yes*." > My guess is that your Nat/firewall is closing the connection after some time > the phone is idle, so this way Asterisk will make sure to always have > communication going trhough that connection so your NAT/firewall won't just > close it.
Sorry, should have mentioned that all these phones have qualify=yes and nat=yes in sip.conf. Thanks. -- James > On Sat, Mar 27, 2010 at 8:17 AM, James Lamanna <[email protected]> wrote: >> Hi, >> I have about 10 Cisco 7960s behind a PIX 506E (IOS v6.3) firewall. >> After some period of time, asterisk says that some of them are >> unreachable, and the phones lose their registration. >> The only way to make the phones recover is to clear the NAT >> translation tables for the phones on the PIX (clear xlate...) >> Does anyone know how to fix this? As you can imagine, it is quite >> annoying. And it does not happen to all the phones either. >> >> sip fixup is enabled on the PIX >> >> phone config parts: >> >> nat_enable : 1 >> nat_received_processing : 0 >> nat_address: [public ip of PIX] -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
