Transcript NG9-1-1 Deployments and Standards

NG9-1-1 Deployments and
Standards
Nate Wilcox
CTO
Together, we’re changing the world of 9-1-1
Basics
• NG9-1-1 Requirements – basics:
– ESInet
– i3 functions
• ESRP, ECRF/LVF, BCF and accompanying protocols
• Mostly only ESInet’s (1st step to i3)
– Privately managed IP network intended for
Emergency Services use (9-1-1 traffic etc.) to
support NENA i3 functions
• “some” i3 components required
• Confusion on routing component
Together, we’re changing the world of 9-1-1
Not NG9-1-1
• Non-i3 oriented solutions:
– No ESRP, no ECRF, no LSRG etc
• Running an ESInet alone or on an ESnet is NOT
NG9-1-1
• Anything that still relies on ALI or an MSAG
• To date, there are NO complete i3
implementations in the US
– Less than a year for the first few to hit
Together, we’re changing the world of 9-1-1
Transition and FE Relationships
Voice, Video, Text, Additional Info
LVF
LIS
LNG
TDM
VoIP
BCF
ESRP
ECRF
LPG Legacy PSAP
ESInet
I3 PSAP
LPG
i3
ECRF BCF
TDM
VoIP i2
ESRP
ECRF
SR
LSRG
LNG LVF LPG
ESInet
LPG
Legacy PSAP
IP PSAP
TRANSITION
ECRF LSRG
IP
TDM
VoIP i2
SR
CAMA/E-MF
ISDN BRI
IP
LPG
Legacy
PSAP
Together, we’re changing the world of 9-1-1
ALI
ALI
LSRG
LIS
Standards Dev and Relationships*
IETF
SIPCORE WG
ATIS
NENA TSD/TRD’s
VoIP/Packet TC (VTC)
Data TC CPE VTC
Ops Cmte Network
ESIF
3261
IMS
08-751
71-001
ECRIT WG
5222
08-002
RFAI
75-001
5223
ESIND
NG MSG
5031
71-002
Phone BCP
08-003
Geopriv WG
4119
Updated
3GPP
ECRF/LVF
Maint.
* Not a COMPLETE picture
Together, we’re changing the world of 9-1-1
Implementation Challenges
• Voice Quality – Echo
– Echo produced by the analog “hybrid” in almost ALL
cases (2 to 4 wire conversion – w/an impedance
mismatch).
– Delays either in the ESInet or the PSTN side > 120 ms
• Multiple aspects can introduce delay
– Transmission:100 miles = 1 msec
– Gateways can introduce 50 msec
– Etc
– Fix – echo cancellation
• Well placed using G.168
Together, we’re changing the world of 9-1-1
Implementation Challenges
• Network specifics
– Service SLA’s
• Typically little more than 2-9’s
• Network downtime results in a MRC discount
• Restrictions on network hosts (MAC specific)
– Fix – Consider multiple network vendors
• Create SLA’s for them to consider
• Read and understand existing network contracts
• Determine acceptable failures as they relate to overall 59’s
Together, we’re changing the world of 9-1-1
i3 Architecture
PSTN/CMRS
Caller
LNG
Policy
Store
B
C
F
Location
Function
ESRP
PRF
ESInet 2
ECRF
GIS
ECRF/LVF
LIS
VoIP
Caller
B
C
F
ESInet 1
ESRP
PRF
Policy
Store
Carrier
Proxy
LPG
NG PSAP
Legacy
PSAP
Call Interaction
Location Related Interaction
Provisioning
LIS Provisioning
Database
Functional Element
Together, we’re changing the world of 9-1-1
Thank-You!