System information

960 Stewart Drive Sunnyvale, CA 94085 USA Phone [phone] +1.877.80SHORE Fax [phone] www.ShoreTel.com
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o Web-based configuration Graphical User Interface (GUI), monitoring and remote
management
o Industry-leading warranty and customer support and services
o The widest variety of standards-based , ShoreTel interoperable business networking
infrastructure
o Provide ShoreTel PBX with a PRI interface, thus eliminating the feature limitations
that ShoreTel has with SIP trunking
Requirements, Certification and Limitations
Problem Statement
 If ShoreTel customers wish to connect to inbound or outbound SIP trunks, a dedicated hardware
device is required to establish connectivity to any ITSP.
Solution
 By leveraging advanced knowledge of Internet security protocols and voice over IP (VoIP),
EtherSpeak is providing a full range of managed SIP trunking services with or without dedicated
hardware prerequisites, enabling ShoreTel customers to have greater flexibility and scale SIP
trunking services according to growth needs. EtherSpeak supports native connectivity options,
customer provided Session Border Controller as Customer Premise Equipment, or connection
as a SIP to PRI hand-off via a PRI Internet Access Device (IAD).
 Natively using EtherSpeak SureTrunk™ Service:
o Pro: Unlimited call capacity, no capital expense with a 30 minute customer quick turn-up
process.
o Cons: Requires ShoreTel SIP Trunk License; SIP Call recording not supported on
ShoreTel; No ringback generated by ShoreTel phones after call is connected through
Automated Attendant.
 Utilizing a PRI to SIP hand-off:
o Pro: No ShoreTel SIP license; ShoreTel Director thinks it is using a PRI; Fully encrypted
for connections over the public Internet; All ShoreTel features supported.
o Cons: Customer capital expenditures are significant and limited to 23 channels (PRI / T1
switch & SIP / PRI IAD); Limited to capacity of 23 concurrent calls per non-recurring
equipment charge necessary for PRI hand-off; Trunks are tied to expensive hardware
with limited capacity.
 Utilizing a customer-premise-based Session Border Controller
o Pros: Provides ability to use any SIP carrier approved by ShoreTel; Normalizes SIP to
carrier requirements / standards.
o Cons: In addition to a SIP license fee, SBC requires a license fee for concurrent calls;
Not all features are supported including call recording, External Assignment; Park and
Pickup; Limited support for SIP Info; May become possible single point of failure on
customer network.