SIP Response Codes Explained

Why don’t we start with some trivia?
Did you know that SIP response codes are based on HTTP/1.1 response 404-not-foundcodes?

Actually, SIP response codes are the extent of the original HTTP ones and even define a new class with more response codes. I’ll let you know which one when we get to it.

That said, not all of the HTTP codes are relevant and mapped to SIP response codes, so if you know some HTTP, don’t expect to find them all in this list.
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Cisco SIP Gateway configuration: The Ultimate Guide

Connecting the Cisco IOS Voice Gateway to CUCM via SIP has been the preferred way to do it in the past couple of years.

The slowly dying H323 protocol (ISDN based) is not being developed anymore while SIP (HTTP based) became the industry standard for VoIP. So whenever PSTN connection is implemented via an IOS Voice Gateway, the choice should be really between SIP & MGCP.

This is how it’s done, step by step, using SIP.

Continue reading Cisco SIP Gateway configuration: The Ultimate Guide

On Cisco Prime Collaboration Assurance Packet Capture & enabling Root access

As you may know, starting of version 10.6 of Prime Collaboration Assurance packet capture became quite tricky. It happened due to Cisco’s decision to disable Root access on the server. Fortunately, Cisco didn’t quite swallow the key.

Continue reading On Cisco Prime Collaboration Assurance Packet Capture & enabling Root access

Essential CSR 11.5 features. Part III- Unity Connection is in the mix

Copywriters, brace yourselves, Unity Connection 11.5 is coming!

Unity Connection 11.5 voice mailAfter discussing version 11.5 of IM&P and CUCM its Unity Connection 11.5 turn.
Although no records were broken with the number of new features, there are definitely some new exiting ones.  Here is a sneak peek of what Unity Connection 11.5 has to offer. Continue reading Essential CSR 11.5 features. Part III- Unity Connection is in the mix