SIP Trunks can be purchased from an ITSP in what manner?

SIP trunks can be purchased in blocks defined by the user, allowing for flexibility based on the specific needs of the organization. This means that businesses can determine the number of simultaneous calls they require and purchase the appropriate amount based on their usage patterns. This option provides the ability to scale up or down according to changing demands, enhancing cost-effectiveness and efficiency.

Other options, such as fixed blocks, unlimited blocks, or annual subscriptions may limit flexibility. Fixed blocks restrict the purchase to predetermined amounts, which might not align with variable call traffic. Unlimited blocks could seem appealing but may not be practical or cost-effective for smaller businesses that don’t need that level of service. Annual subscriptions could impose a long-term commitment that does not accommodate the dynamic nature of an organization’s communication needs. Thus, the user-defined block approach is the most adaptable solution for acquiring SIP trunks.