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IP 335 with Juniper EX switches

Occasional Visitor

IP 335 with Juniper EX switches

We have about 120-140 Polycom 335 IP phones distributed across a Juniper EX4200-48PS Virtual Chassis [aka stack] running JUNOS 12.3R7.    The switches are configured with dual 930W, a power budget of 740W, LLDP and LLDP-MED at the interfaces. Switch with the highest populariton of phones has only used 125W. 


Intermittently, we lose an entire switch of phones for no apparent reason.  The switch does not lose power or reboot, it just seems to lose connectivity to all of the phones on 1 switch.  We have upgraded code [twice], logged everything possible to match timestamps for outages, basically exhausted all we know with the switches.


So, I am wondering if anyone else has experienced simiar symptoms using 335/550 and Juniper switches. 


SoundPoint IP 335

Assembly: 2345-12375-001 Rev:A



Application Main: SIP Ver



PolycomDSP Titan Mem1 FS10 Ver








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Polycom Employee & Community Manager

Re: IP 335 with Juniper EX switches

Hello JM,

welcome to the Polycom Community.


UC Software 3.3.3 is no longer a supported Platform so I advise you to upgrade to the latest UC Software 4.0.8

The community's VoIP FAQ contains this post here:

Oct 7, 2011 Question: How can I setup my Phone / Provisioning / Download / Upgrade / Update / Downgrade Software?
Resolution: Please check => here <=


If you still experience issues after this you may want to work with Jupiter support and also involve your Polycom reseller so they can raise a ticket with Polycom support.

Please ensure to provide some feedback if this reply has helped you so other users can profit from your experience.

Best Regards

Steffen Baier

Polycom Global Services

The title Polycom Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. My official "day" Job is 3rd Level support at Poly but I am unable to provide official support via the community.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 2 of 2