Hello Tenaro - I apologize for the long delay in getting back to you on this post. Though I appreciate your questions regarding TelePresence Interoperability Protocol, this forum is geared more towards troubleshooting with existing deployment problems. May I suggest forwarding your questions to your account team who can better answer these types of questions to help you understand TIP.
Q: Is TIP just a temporary solution, as it is mentioned in the slidedeck from the link you provided? (quote: "imediate interoperability with Cisco WHILE working on an industry standard").
A: This in my opinion is subjective, as one person may want to deploy their TelePresence infrastructure in a manner that utilizes TIP and continue to conduct business that way while another person may want to use it as a stepping stone until they have upgraded their infrastructure to allow for the direct provisioning and registration of some of the formerly TANDBERG product portfolio line with Unified Communications Manager. Endpoints such as the EX series, the C-Series and the Profile series will be able to register directly with UCM (opposed to a VCS or gatekeeper) and you can make direct Interop Point-to-Point calls with a CTS endpoint. This is opposite of Native Interoperability calls that require third party endpoints to register with VCS. Note, CTS endpoints must be running at least 1.7.4 and registered with UCM 8.5.1 minimum for Native Interop calls. Direct provisioning and registration to UCM on the EX, C-Series and Profile Series will be supported in UCM release 8.6.1 and the MX200 is targeted for the 8.6.2 release.
* You will also need to run TC5 on the Cisco EX, C-Series, etc to allow provisioning and registration to UCM 8.6 and complete a direct interop point-to-point call.
Q: Is TIP on the roadmap for other Cisco videoendpoints (like devices from Tandberg portfolio)?
A: Yes, see previous question (above).
Q: Can you compare TIP with BFCP or ICE? Seems to me that same functionality can be achived with ICE and would like to know if TIP has some advantages.
A: This question should be directed toward your account team to better list out the advantages and disadvantages between TIP or an alternative protocol.
Q: Will middle-call services work for calls using TIP?
A: Are you referring to features with Interworking calls such as Hold/Resume, or Hook Flash for a second dial tone? This may also be a question you want to direct to your account team.
Q: Is CUCM 8.6 able to speak TIP? Can we establish calls between CTS 3000 and standard SIP (or H.323) video endpoint via CUCM or some additional box like CTMS is mandatory?
A: Yes, TIP is supported in 8.6 release. TIP support started in UCM release 8.5.1.
Q: Can you compare CTMS with Telepresence Server and/or MXE 5600?
A: This should question should be directed to your account team to provide you with the comparison and feature specification differences you are seeking however, here are a few of the comparisons:
The CTMS is a server blade where MXE 5600 is a scalable and modular system. The modules are hot-swapable, so if a module does fail, you can simple swap in a new one. If the CTMS fails, the entire MCU is down until you can get a replacement unit. The CTMS is considered to be in the MCU family whereas the Cisco MXE 5600 is a Media-Processing Platform. This allows for "any media to any endpoint anywhere." The Cisco MXE 5600 encompasses capabilities of other product categories such as transcoders, media gateways, and MCUs in order to connect multiple video applications together and, in addition, add value to the media being processed. Both the CTMS and 8710 TelePresence Server offer 1080p High Definition Video capability where the MXE 5600 allows up to 90 720P Video streams (30 720p legs per MPM & up to 3 MPM blades per chassis). The CTMS gives you 48 segments per CTMS. A CTS 1000 endpoint takes 1 segment where a CTS 3200 takes 3 segments (4 if you have a Presentation codec). You can mix Cisco TelePresence Server capabilities with gateway and recording capabilities in the same chassis. You cannot do that with the CTMS or MXE 5600. The 8710 also allows for ActivePresence which gives you a full-screen immersive view of the primary speakers with a seamless overlay of others in the call.
There are a plethera of feautres packed into the CTMS, MXE 5600 and TS 8710. I invite you to view the Data Sheets below for each product.
TelePresence Server 8710:
http://www.cisco.com/en/US/prod/collateral/ps7060/ps11305/ps11317/ps11339/data_sheet_c78-626140_ps11340_Products_Data_Sheet.html
MXE 5600:
http://www.cisco.com/en/US/products/ps10588/products_data_sheets_list.html
Cisco TelePresence Multipoint Switch:
http://www.cisco.com/en/US/products/ps7315/products_data_sheets_list.html
Kind regards,
-Andrew
With Andrew Beezley 
