Hello Andrea, IP phones doesn't allow the administrators to change the MTU settings, the only setting which is allowed is to turn ON and Off the DF bit setting via CUCM.
And as you rightly mentioned, the change of MTU on the CUCM is for the signaling or the media ( via MTP) which is traversing via CUCM.
Hope it helps.
Thank you. Aashish
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Hello Anatara, Thanks for the detailed document, can you please mention the cucm versions, this way our partners can better match and relate to the issue. Thanks, Aashish
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Hello Michael, 8831 phone only supports EAP FAST and EAP TLS methods and thus do not support the EAP MD5. "Cisco Unified IP Conference Phone 8831 implements the IEEE 802.1X standard by providing support for EAP-FAST and EAP-TLS authentication.” http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/8831/9_3_3/english/adminguide/CS38_BK_A8C4AC51_00_adminguide-8831/CS38_BK_A8C4AC51_00_adminguide-8831_chapter_01.html#CS38_RF_NE5531A4_00 hope this helps. Thanks, Aashish.
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Hi Philippe, The feature is "HTTP Firmware Upgrade" which is a feature of the 9.x phone firmware. please check the below release notes for the same, http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7900_series/firmware/9_3_1/release_notes/P790_BK_RF1DAED3_00_rn-9_3_1-7900-series.html#P790_RF_H0DA5A91_00 according to this, the prefered method is http download and if that fails it will fallback to tftp download. Please note that the phone will try to create TCP socket at port "6970" and if that is blocked then after some retries the phone will proceed for the normal TFTP download and because of this you will experience delay in phone reset and extension mobility login and logouts. Thanks, /Aashish
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