Overview of the benefit of SIP trunks as a service for ShoreTel partners

1. SureTrunk for ShoreTel Extending Your ShoreTel Into the Cloud Bill Alessi EtherSpeak (703) 221-9999 [email_address]

7. ShoreTel and Centralized Billing Internet / MPLS EtherSpeak Session Border Controller PSTN Origination and Termination PSTN Gateways VoIP Peering Main Office – ShoreTel Director & - 6 Trunks with a “Burst” - IP PBX Customer provided with one bill regardless of number of sites SureTrunk with BurstaTrunk option provides ShoreTel customers the most cost-effective method for managing monthly recurring expense Tunnel.a IPSEC Tunnel for Signaling 192.168.0.0/24 Office Subnet All Sites on One Bill! - Convenience of one bill to pay for all customer offices - Enables with BurstaTrunk, customer is able to only pay for trunks used – no more wasted capacity Inbound / Local Free; Customer only billed on 1 + dialing & inbound toll-free utilization Calls calculated on 6 second billing increment ShoreTel Client Office A SureTrunk Connection SureTrunk Centralized Billing Carrier MPLS Hand-off Legacy PSTN POTS / PRI SureTrunk Monthly provided on one easy to undertsand bill and easy to use customer portal EtherSpeak Core VPN Router

9. ShoreTel and Virtual Numbering Internet / MPLS EtherSpeak Session Border Controller PSTN Origination and Termination PSTN Gateways VoIP Peering ShoreTel Director with DID numbers availability for 95% USA and 80% of CAN IP PBX Customer provided with DIDs from virtually any LATA in USA / CAN / UK - All calls flow inbound (originate) from EtherSpeak to customer ShoreTel over Internet or MPLS connection Tunnel.a IPSEC Tunnel for Signaling 192.168.0.0/24 Office Subnet All Sites on One Bill – or One Bill per Site - EtherSpeak provides direct-dial number availability in 95% of USA, 80% of CAN and 50% of UK SureTrunk VN Features: Inbound / Local Free; Customer only billed on 1 + dialing & inbound toll-free utilization - DIDs have option for inbound only – or 911 compliance with auto routing to local 911 center (PSAP). - Inbound only: numbers are for inbound routing only and should not show up in caller-id ShoreTel Client Office A SureTrunk Connection Carrier MPLS Hand-off Legacy PSTN POTS / PRI SureTrunk Monthly Concurrent Call Calculation Based on Customer CDRs EtherSpeak Core VPN Router

12. ShoreTel and BurstaTrunk Internet / MPLS EtherSpeak Session Border Controller PSTN Origination and Termination PSTN Gateways VoIP Peering Main Office – ShoreTel Director & - 6 Trunks with a “Burst” - IP PBX Customer provided with ability to make any number of simultaneous calls – - providing they have ShoreTel SIP licenses and adequate bandwidth for highest amount of expected calls. Tunnel.a IPSEC Tunnel for Signaling 192.168.0.0/24 Office Subnet All Sites on One Bill! - Customer only billed for 33 concurrent calls for given month! - Compared with a 46 Channels / PRI, Customer would save on 14 unused trunks in this monthly example Inbound / Local Free; Customer only billed on 1 + dialing & inbound toll-free utilization Calls calculated on 6 second billing increment ShoreTel Client Office A SureTrunk Connection BurstaTrunk Billing Results Carrier MPLS Hand-off Legacy PSTN POTS / PRI SureTrunk Monthly Concurrent Call Calculation Based on Customer CDRs EtherSpeak Core VPN Router

14. SureTrunk Disaster Recovery Internet / WAN MPLS EtherSpeak Session Border Controller PSTN Origination and Termination PSTN Gateways VoIP Peering Remote Office Backup SIP Switch location Main Office – ShoreTel Director & Main SIP Switch location IP PBX IP PBX VPN tunnel terminated from primary and secondary customer locations to EtherSpeak’s edge. In the event of connectivity or site failure – inbound calls routed to secondary SIP switch; or tertiary PRI / POTS through PSTN Tunnel.a Tunnel.b IPSEC Tunnel 192.168.0.0/24 Office Subnet 192.168.10.0/24 Office Subnet 74.84.203.x/24 If primary connection fails – EtherSpeak will send and receive calls from site B’s connection and secondary ShoreTel switch Outbound calls routed to secondary ShoreTel switch in the event of failure Inbound calls automatically directed to secondary ShoreTel switch / tunnel – or via PSTN to POTS / PRI System auto-detects error condition SureTrunk DR provides 2 call paths, a local DID; free-local; free-inbound and 100 minutes of included 1 + long distance With DR enabled, ShoreTel customers recover from PSTN outages quickly and painlessly ShoreTel Client Office A ShoreTel Client Office B Primary ShoreTel Switch to SureTrunk Connection Secondary ShoreTel Switch to SureTrunk Connection Carrier MPLS Hand-off IPSEC Tunnel Encryption Domain Src: 192.168.10.b Dst: 172.26.a.b Legacy PSTN POTS / PRI Legacy PSTN POTS / PRI EtherSpeak Core VPN Router

16. SureTrunk: Tech Overview… Internet / MPLS WAN EtherSpeak Session Border Controller PSTN Origination and Termination PSTN Gateways VoIP Peering Remote Office Backup SIP Switch (access via /32 IPSEC VPN) Main Office – ShoreTel Director & Main SIP Switch location (access via /32 IPSEC VPN) IP PBX IP PBX VPN tunnel terminated from primary and secondary customer locations to EtherSpeak’s edge. Customer will have a separate SBC address (allocates out of 172.26.0.0/16) on the SBC interface. Tunnel.a Tunnel.b IPSEC Tunnel Encryption Domain Src: 192.168.0.a Dst: 172.26.a.a 192.168.0.0/24 Office Subnet 192.168.10.0/24 Office Subnet 74.84.203.x/24 1: Using SureTrunk for Cost Consolidation and Simplified Billing 2: Leveraging SureTrunk for Virtual Number Availability for USA, CAN and now UK numbers 3: Using SureTrunk for BurstaTrunk – a unique feature that enables trunks on-demand with High-Watermark Monthly Billing 4: Depending on SureTrunk Disaster Recovery (SureTrunk DR) for easing you out of a Potential Crisis When the PSTN Goes Down Ethernet interface 172.26.a.a 172.26.b.b Policy route 172.26.a.a 192.168.0.a Tunnel.a 172.26.a.b 192.168.10.b Tunnel.b ShoreTel Client Office A ShoreTel Client Office B Primary ShoreTel Switch to SureTrunk Connection Secondary ShoreTel Switch to SureTrunk Connection Carrier MPLS Hand-off IPSEC Tunnel Encryption Domain Src: 192.168.10.b Dst: 172.26.a.b Legacy PSTN POTS / PRI Legacy PSTN POTS / PRI EtherSpeak Core VPN Router

17. CONTACT For more information: http//:www.suretrunk.com [email_address] (703) 291-4980