Mission Critical User Needs

Mission Critical User Needs The main needs of the mission critical PMR users, such as the ones representing the Public Safety and Security (PSS) forces can be briefly categorized as follows: Specialized functionality Instant connection Security Dynamic management of talk groups Emergency calls Prioritization of communications

Mission Critical User Needs Response times Typical requirements for voice call set-up time are in the range 0.3 to 1 second Seamless radio coverage Throughout the whole served area, including guaranteed availability of coverage under exceptional conditions, including the means to maintain communication during network outage

Mission Critical User Needs Incident capacity the need for radio capacity increases during major incidents and accidents and that capacity must be guaranteed to the rescue and law enforcement forces Uncompromised voice quality allowing the listener to recognize who is speaking, even under excessive background noise

Mission Critical User Needs Radio coverage Complete coverage under normal operating conditions Mechanisms to guarantee coverage for rescue forces under exceptional conditions Members always hear A mechanism usually called Late Entry is needed to rejoin lost talk group members in the call

Mission Critical User Needs Network Cost Also sharing of network infrastructure with commercial users should give cost benefit. Mobile terminals cost

Available Public Safety Communication Systems PMR Conventional single repeater Systems Simulcast Radio System Multicast Radio System Trunked Radio System TETRA Radio System

What is TETRA? UHF Radio network TErrestrial Trunked RAdio (TETRA) is the modern digital Private Mobile Radio (PMR)and Public Access Mobile Radio (PAMR) technology. TETRA uses Time Division Multiple Access (TDMA) technology with 4 user channels on one radio carrier TETRA provides voice and data communication and suits a wide range of users.

TETRA Adopted by 77 countries ( Europe – Asia – Africa and South America 1076 contract around the world to date www.TETRAmou.Com ETSI standard – non proprietary Multi vendor subscriber units . Low cost – more features – continuous development

Voice Communication Services Excellent voice quality Fast call set-up Individual (one-to-one) calls (Full duplex) Express calls (push & talk) Group communication Broadcast groups Group calls Scanning of groups Dynamic regrouping Emergency calls Direct Mode Supplementary services Extensive security: Authentication of radios Encryption of voice, data & signaling

What makes TETRA unique Unique group communication package in total Fast call set-up time Direct Mode (DMO) Queuing of channel resources Signalling during voice call Pre-emptive priorities, ambience listening Multiple security schemes & algorithms authentication of radios (& networks) air interface & end-to-end encryption disabling of stolen radios TETRA is the only open standard to effectively combine group radiocommunications, mobile telephony and mobile data. The most demanding PMR user communities have had their needs clearly visible in the standard contents, aiming at: - ultra fast response times - security - availability of service under all circumstances Only TETRA provides all this in the same package.

Supplementary Services Busy Queuing and Call Back Queuing Priority Recent User Priority All Start / Fast Start Late Entry Critical Site Assignment Requested Sites Talking Party Identification Calling Line Identification Presentation Dynamic Site Assignment Valid sites Dual Tone Multi-Frequency Overdial Priority Monitor Pre-emptive Priority Call Pre-emptive Priority Call – Busy User Pre-emption Site Wide Call Barring Incoming Calls Barring Outgoing Calls Air Interface Encryption Authentication (MSO initiated) Supplementary Services Busy Queuing and Call Back – places MSs in busy queue when no voice channels are available, then calls back MSs as channels become available. Queuing Priority – assigns resources for calls according to individual or group priority level. Priority 1 is reserved for emergency calls. Individuals and groups are assigned priorities 2-10. Recent User Priority – if MS initiates a call within 10 seconds after a call disconnect, it is given priority in the busy queue. Dynamic Site Assignment – traffic channels are only assigned at sites where one or more group members are registered. Valid Sites – talkgroup can be defined to only operate at particular sites. All Start / Fast Start – for All Start, the system waits for all necessary resources before starting the call. For Fast Start, call is set up with any available sites. Other sites are added to the call when available. Critical Site Assignment – sites defined as critical must be included when a call is set up (even if Fast Start)

Transportable Dimetra Site VSat Satellite MTS 2 Dimetra Master site E1 Link E1 Link Dimetra Master site System Databases User Configuration Server database – contains subscriber/user configuration data. Located on UCS. System Statistics Server database – stores and reports cluster-level statistics. Located on SSS. Zone Statistics Server database – stores and reports zone-level statistics. Located on ZSS. Zone database – contains replication of UCS database, plus infrastructure information for the zone. Located on ZDS. Zone local database – contains infrastructure information for zone. Located on zone controller. FullVision database – includes state and alarm information. Located on FullVision server. Elite Databases (Alias/Console) – contains information to support dispatch consoles (alias and console configuration settings). See Volume 1, Chapter 6, “System Databases”. MTS 2 Transportable Dimetra Site For rural area and temporary coverage

Wireless Console To PSTN Cross Patch Operation Conventional Network Tetra Network Conventional Network Tetra Radio Conventional Radio To PSTN Cross Patch Operation

Data Communication Services Status Message User sends pre-coded message to the console Sent from radio keypad or interface Database inquiry Predefined Auto reply Short Data service Messaging to and from a host English text messages up to 140 characters Arabic text messages up to 70 characters Simultaneous “voice & short data” Packet Data Similar to short data Larger data file transfer Photos, reports…etc Tailored WAP applications Going to lunch 123

Short Data Applications Short Data Application Examples: iSDS Work orders, group messaging. Reports.

Tetra Coverage Ismailia Cairo Sharm Hurgada Tetra Coverage

Tetra Cairo Sites

Radio Operation Manager Thank You Contact Information Mostafa Al Awad Radio Operation Manager Systel - Egypt +20 12 393 8878 Mostafa.elawad@systel.com.eg