1. Mark Bilton-Smith
President
SIP
mark.b@rio.com
Session Initiation Protocol
VoIP (SIP) Trunking – Quality Delivery Methods and ROI
2. SIP trunk is …
A transport protocol offered by
LEC - ILEC - CLEC - ITSP
that connects a company's
IP PBX – Hybrid PBX or ?
to the existing telephone system
infrastructure PSTN via a managed
data service or Internet connection
using the SIP VoIP standard.
3. Other VoIP protocols
• Megaco (a.k.a. H.248) and MGCP both media gateway control protocols
• Skinny Client Control Protocol proprietary protocol from Cisco
• MiNET proprietary protocol from Mitel
• CorNet-IP proprietary protocol from Siemens
• IAX the Inter-Asterisk eXchange protocol used by the Asterisk open
source PBX
• Skype a proprietary protocol used in the Skype application
• Jajah a proprietary peer-to-peer protocol used in the Jajah SIP and IAX
compatible webphone
• Jingle open peer-to-peer protocol based on XMPP (Jabber) and being
harmonized with the Google “Google Talk” protocol.
4. SIP trunk bandwidth required…
http://www.erlang.com/calculator
Great website to calculate your bandwidth requirements
In order to achieve toll quality voice you provider must deliver uninterrupted
Data at >150ms Latency >30ms Jitter <1% Packet loss for voice 0% for Fax
5. Delivery methods Bandwidth …
Unmanaged Internet
Least expensive and does not include Quality of Service and may not meet the requirements for
Toll Quality Voice.
Managed Data Service
More expensive but provides Quality of Service and ensures the Toll quality voice your business relies on.
Examples of Managed service Must be dedicated to the provider
• Broadband or DSL
• Data T-1
• Data DS-3
• MPLS
• Metro Ethernet (Redundant)
• Copper over Ethernet (Redundant)
• Bonded Broadband (redundant)
• Fiber
11. The Gotcha’s
• 911
• Unmanaged delivery (Internet)
• Compression G.711 - G.729
• Gateways and IAD’s
• Interopibility B2BUA - SIP Proxy - IAD
• Firewalls (NAT traversal)
B2BUA - SIP Proxy – IAD
• Analog Fax and Modem
ATA – T.38
• Redundancy
PSTN – Dual data pipes
12. Pricing Models and ROI
POTS vs. SIP trunks (Includes Taxes and surcharges)
Pots $35.00
SIP Trunks $15.00
T-1 vs. EOC (3 year term – No taxes or surcharges)
Data T-1 (1.544 mbps) $ 399.00 +
EOC (3 x 2 mbps) $ 99.00
EOC (15 x 2 mbps) $ 199.00
EOC (25 x 2 mbps) $ 349.00
Enterprise EOC (8 mbps) $ 399.00
T-1 or PRI vs. Dynamic SIP PRI T-1 (3 year term – No taxes or surcharges)
T-1 or PRI $ 499.00 +
Dynamic $ 249.00
20 SIP Trunk Bundle $ 199.00
DID’s 15 cents each
LD bundles is as low as 2.5 cents a minute
Hosted IP Business telephones
Hosted service per phone $24.95 (Includes SIP trunks, DID’s & features)
*Beware of inflated DID costs and Local call pricing.
13. Questions
SIP
Mark Bilton-Smith
President
Mark.b@rio.com
Session Initiation Protocol
Thank you
