Are the phones and sipXecs server on the same LAN segment / VLAN with no firewall / nat between them?
Mike 2010/10/5 Massimo Vignone <[email protected]> > Hi, > > As I wrote in a previuos mail, I'm experiencing some problems with Polycoms > phones. > > I have two servers running Sipxecs 4.2.1 with a failover setup. > > Polycom phones are Soundpoint IP 330 with 3.1.3RevC firmware. > > To prevent SIP spam, phones validate INVITE requests with the "source" > method, and use NAPTR. > > Randomly, but very often, phones respond with the TRYING message after > several seconds, so calls are diverted to voicemail. > > We tried to reduce network latency, using DSCP based QoS. > > Please help me to troubleshoot the problem: an example is attached to this > mail. > > Thank you for your help. > > Massimo > > -- > > Massimo Vignone > UniMORE - Servizi Informatici - Reti e Sistemi > > Phone: +39.059.2058032 Fax: +39.059.2058034 > sip:[email protected] <sip%[email protected]> ISN:8032*881 > > > > _______________________________________________ > sipx-users mailing list > [email protected] > List Archive: http://list.sipfoundry.org/archive/sipx-users/ > -- There are 10 kinds of people in this world, those who understand binary and those who don't. [email protected] blog: http://www.sipxecs.info call: sip:[email protected] <sip%[email protected]>
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