SIP Trunk and Consultative Transfer, Early Attended Transfer and Blind Transfer issue
I'm working with a SIP service provider on a new SIP Trunk. When I don't use MTP, I have an issue with Consultative Transfer, Early Attended Transfer and Blind Transfer. But when I use MTP all three transfer types are working.
Is there a way to let Consultative Transfer, Early Attended Transfer and Blind Transfer work without using MTP. I'm using Cisco CUCM 9.1.
If you're doing SIP Early Offer, then an MTP is required. Using SIP Delayed Offer could possibly alleviate this.
Are you doing a ton of calls, or is your CUCM CPU spiking? Otherwise, there shouldn't really be an issue with using an MTP. Unless you're using DSP's to do it... Or if your carrier is offering a different version of G711 than you're using (alaw vs ulaw).
Have you ran any debugs yet that you can provide of the SIP Messages?
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
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