Quality of Service & Emergency Services: Does it make sense?

Tony Rutkowski

Panel Members

Barbara Stark – Position Statement

• Short Answer: Yes, where appropriate• Which networks are involved?

– Core Internet (many interconnected providers)– Emergency Networks (operated by public safety and

other government agencies)– Private Networks (corporate and home networks)– Access Networks

• Tightly-controlled access, e.g., cell / mobile phone networks (outside of my scope)

• Not-so-tightly-controlled access, e.g., broadband connections, some hotspots

Barbara Stark – Position Statement

• Which traffic to mark, and how?– “sos” SIP, and associated RTP (voice and video)– DSCP, but only when trusted (which DSCP? EF (AF

for video)? New DSCP for emergency services?)– Destination (to emergency network) or origination

(from emergency network) IP address may be useful in some networks when marking is not trusted.

– Other means for trusting nature of traffic?• Priority vs. Admission Control

– Since other VoIP traffic will be sharing EF queues in some networks, is there a need for separate emergency DSCP with admission control for the case when call volumes spike during a disaster?