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Yealink Forums » IP Phone Series » T4x Series » Unable to register phone on Zultys MX250 r8.0.3: SIP 400 Error

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Unable to register phone on Zultys MX250 r8.0.3: SIP 400 Error
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Post: #7
RE: Unable to register phone on Zultys MX250 r8.0.3: SIP 400 Error
Hi Isaac,
Please download the new firmware which fixed register issue on Zultys:
ftp://Cathy:6br6pcyl@ftp.yealink.com/fir...1.0.85.rom
After upgrade to this firmware, please reset to factory default.
Any test result please let us know.
Thanks.
(This post was last modified: 06-19-2013 04:24 PM by Yealink Support.)
06-19-2013 11:06 AM
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RE: Unable to register phone on Zultys MX250 r8.0.3: SIP 400 Error - Yealink Support - 06-19-2013 11:06 AM

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