Tell Me About SIP Proxy Servers.

SIP Proxy Server, also known as SIP Proxy or SIP Server, serves as a mediator or facilitator between SIP devices, facilitating point-to-point communication between them from call pickup to call drop. SIP Proxy serves as more than simply a middleman, though.

We may visualize SIP Proxy Server as a call manager and security guard to make it easier to understand. Let's now examine its responsibilities in each role.

Phone Call Manager

Help with call processing in the SIP network to establish calls between SIP devices and put provider call-routing guidelines into practice.

Establish call rules that regulate the number of rings that occur simultaneously or consecutively, as well as the amount of time that passes before the call is forwarded to another extension or voice mailbox.

Sometimes, before transmitting request messages, a SIP Proxy Server will even interpret or rewrite some of the message content.

Security Guard

Allocate or refuse entry to a network resource. A SIP Proxy Server establishes the identity of a user and grants them access to different resources after verifying that the user is who they say they are.

Strengthen the security of your network. For instance, before a caller can connect to an expensive destination like the PSTN network or a foreign country, a SIP Proxy Server verifies the caller's identity and credit.

Two Types of SIP Proxy Servers

There are two primary types of SIP Proxy Servers, each of which performs a different purpose to meet the demands of users in various scenarios, depending on how the SIP Proxy Servers handle the information they receive.

Stateless Proxy Server

Simply said, stateless proxy servers forward the communications they receive to the designated location. They don't keep any records of the conversation or transaction.

Stateless Proxy Servers typically operate very quickly and effectively since they don't have to expend additional time and effort remembering the SIP requests and messages that they have delivered. Network hubs are a good fit for Stateless Proxy Server as a result.

Stateful Proxy Server

In contrast, SIP requests, messages, and responses are all tracked by stateful proxy servers. This feature lets you retransmit the request in case the servers don't get the response they were expecting, and it also lets you restore the data you'll need later.