1 / 15

TIA TR-41 VoIP over WLAN projects

TIA TR-41 VoIP over WLAN projects. Jean-Michel Lauriol, Alcatel François Pinier, Alcatel. TIA TR-41. TR-41 : User Premises Telecommunications Requirements

davin
Download Presentation

TIA TR-41 VoIP over WLAN projects

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. TIA TR-41 VoIP over WLAN projects Jean-Michel Lauriol, Alcatel François Pinier, Alcatel Jean-Michel Lauriol, Alcatel

  2. TIA TR-41 • TR-41 : User Premises Telecommunications Requirements • Addresses standards for telecommunications terminal equipment and systems, specifically those used for voice service, integrated voice and data service, and Internet Protocol (IP) applications. • Overview of TIA TR-41 activities in May 03 : 11-03-296r1 Jean-Michel Lauriol, Alcatel

  3. TR-41 VoIP over WLAN Projects • Why ? • Need for VoWLAN handset interoperability • Based on IEEE 802.11 standards, Wi-Fi Alliance deals with only layers 1 and 2 • TIA is the right standardisation body to address end-to-end interoperability • TIA already specified wired terminals (IP phone, …) interoperability requirements (TIA/IS-811) • VoWLAN projects launched in Q1 2003 inside TR-41 • see Press Release : http://pulse.tiaonline.org/article.cfm?id=1047 Jean-Michel Lauriol, Alcatel

  4. Scope of TR-41 VoIP over WLAN Projects - 1 • Mission : • requirements for enabling VoIP telephony communications via WLAN in a corporate environment • Goals : • not duplicate efforts • reference existing and drafts standards (IEEE 802.11, WFA, IETF, ...), if necessary develop new specifications. Jean-Michel Lauriol, Alcatel

  5. New doc TIA 1003 New doc TIA 1002 TBD Update doc TSB 146 Scope of TR-41 VoIP over WLAN Projects - 2 • Define interoperability requirements: • needed WLAN architecture for voice applications • « VoWLAN handset profile » concept • Telephonometry • location for Emergency Calling service Jean-Michel Lauriol, Alcatel

  6. Scope of future TIA 1002 document -1 • Project : PN-3-0102, “Requirements for a Wireless LAN Based IP Telephony Subsystem” • TIA interoperability requirements shall be compliant with WFA & IEEE 802.11specifications • Voice requirements need enhanced 802.11 specifications (11e, 11i, …) : • Living document • Define interactions between WLAN and upper layers (e.g.. global MSC) Jean-Michel Lauriol, Alcatel

  7. Scope of future TIA 1002 document -2 • Reference model Jean-Michel Lauriol, Alcatel

  8. Scope of future TIA 1002 document -3 • Main High level requirements : • 802.11 Infra-structure mode • IP Core network based on IPV4 • Support Power Save mode as defined in 802.11 • Support of multiple Voice VLANs per AP • Level of QoS for a moving WT shall not be significantly decreased due to layer 2 handovers, IP roaming and re-authentication process • Possible to perform authentication process through WLAN smart card inside WT • Possible to assign IP address dynamically Jean-Michel Lauriol, Alcatel

  9. Scope of future TIA 1002 document -4 • Mobility • L2 and L3 handovers • L3 handover is a key issue • VLAN (dedicated voice VLAN ids) • Security is defined at several levels • define suitable authentication method above EAP for seamless mobility • Investigate end-to-end security based on standard telephony protocol (e.g. H.235, …) • QoS • Mandatory features to support voice Jean-Michel Lauriol, Alcatel

  10. Scope of future TIA 1003 document • Project : PN-3-0103, “Requirements for a Wireless LAN Based IP Telephony Endpoint” • Will be patterned after TIA/IS-811 but will cover products with a WLAN interface instead of an Ethernet Interface • In addition to WLAN support, it will address requirements for : • Display and keypad • Acoustic performances : Pointer to new telephonometry document • Network and security requirements • Power management • Telephony features description • Control protocol requirements (SIP, H.323 and Megaco) Jean-Michel Lauriol, Alcatel

  11. Telephonometry - 1 • Current Status : Transmission requirements of wireline VoIP phone sets are defined in ANSI/TIA/EIA/-810-A specification approved December 19, 2000. • This specification does not address wireless VoIP phone sets ! • Aim of the new project : Develop a specific standard for wireless VoIP handsets. Jean-Michel Lauriol, Alcatel

  12. Telephonometry - 2 • Why ? • Due to small shape, wireless handset does not have same electro-acoustic features as corded phone set (e.g. Low intrinsic TCLw). • Wireless handset shall operate in noisy environment (e.g. corridor, meeting room, manufacturing space). • Work still in progress within TR-41 for handling this new topic : Should be discussed during the next TR-41 session. Jean-Michel Lauriol, Alcatel

  13. TIA/EIA TSB-146 • IP telephony Support for Emergency Calling Service • Problem to be solved : • Localization of IP phones and Mobile Phones in corporate environment. • Ideally, accuracy should be chosen so as to differentiate between floors • Current solution • SNMP (LAN equipment or remote powering device) • DHCP tracker • Bluetooth • Other ? Jean-Michel Lauriol, Alcatel

  14. Roadmap • Publications : Q4’04 Jean-Michel Lauriol, Alcatel

  15. TR-41/802.11 Liaison • Need to establish official Liaison • How to work together ? • Proposal : • E-mails between TR-41.4 chair and chairs of IEEE 802.11 sub-groups (Which groups ?) • TR-41.4 informs periodically the status of our works dealing with IEEE 802.11 topics • Which contact points (WNG, 11e, 11i, …)? • Next TR-41 meeting is week of August 18-22 in Montreal (Canada). • Public FTP site for TR-41.4 www.tiaonline.org Jean-Michel Lauriol, Alcatel

More Related