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Microsoft® Lync® Server 2013 Unleashed Second Edition by Randy Wintle, Alex Lewis, David Ross, Tom Pacyk

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SIP Trunking Opportunity

SIP Trunking is a relatively new trend in telephony. It is the capability to purchase PSTN services and have them delivered over IP connections rather than traditional T1/E1 PRI connections. Although SIP Trunking does not require a centralized deployment model, a centralized telephony deployment does introduce the opportunity to deploy SIP Trunking more easily. The combination of centralized telephony and SIP Trunking is ideal for realizing cost savings in PSTN Trunking.

Many organizations have a vast number of PRI connections delivering PSTN services. The problem with PRIs is that they come in only one size (23 voice channels per trunk in the U.S.). SIP Trunking allows organizations to have more control over how many ...

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