Mar
19
I just finished up 2 weeks of a really great CCNP Voice bootcamp, covering all 5 of the latest 8.0 version exams from Cisco (CVOICE, CIPT1, CIPT2, CAPPS, & TVOICE). All in all we ended up with 62 completely brand-new hours of informative video that we are sure you will be excited to watch when they are posted to our streaming and download sites here in probably just about a week. We went fairly in-depth on most every topic, one of them being MGCP during our TVOICE section of class. BTW, with... Read More
Feb
11
This isn't exactly the latest news, and doesn't effect the CCIE Voice Lab exam (although it very well may effect the new CCNP Voice exams), however I am hearing more and more how people are upgrading their Voice routers with newer 15.x IOS code, and not realizing how existing (working) VoIP calls are being broken due to new, intelligent feature default configurations. Last July, Cisco decided (wisely, IMHO) to create a new style of Toll-Fraud prevention to keep would-be dishonest people from... Read More
Feb
09
Lab's 1 & 2 from INE's current CCIE Voice Volume II Workbook have been completely re-written from the ground-up, and have now been pushed to all subscribers in their INE Members area. Read More
Nov
08
Abstract This publication discusses the spectrum of problems associated with transporting Constant Bit Rate (CBR) circuits over packet networks, specifically focusing VoIP services. It provides guidance on practical calculation for voice bandwidth allocation in IP networks, including the maximum bandwidth proportion allocation and LLQ queue settings. Lastly, the publication discusses the benefits and drawbacks of transporting CBR flows over packet switched networks and demonstrates some... Read More
Oct
17
Computing voice bandwidth is usually required for scenarios where you provision LLQ queue based on the number of calls and VoIP codec used. You need to account for codec rate, Layer 3 overhead (IP, RTP and UDP headers) and Layer 2 overhead (Frame-Relay, Ethernet, HDLC etc. headers). Accounting for Layer 2 overhead is important, since the LLQ policer takes this overhead in account when enforcing maximum rate. Read More

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