Objective The purpose of this post is to clearly define standards I use for QoS in a Cisco and Avaya VoIP environment. Even though I’m using Cisco, these standards could be implemented on other vendors network equipment.
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Mapping of Provisionable TOS, DSCP, and PHB Values
1. Cisco recommends that you use the combinations of values shown in the table. The system will accept certain other combinations of values, depending on the format; however, the combinations shown in the table have been tested by Cisco for proper behavior. 2. Hexadecimal equivalent. This value is listed for convenience. It is not used [...]
Bandwidth Calculations for QOS
Codec Bandwidth G.711 80 kbps G.729 24 kbps
Power Consumption for Cisco and Avaya IP Phones
IEEE 802.3af Device – Class 0 (15.4W) IEEE 802.3af Device – Class 1 (4W) IEEE 802.3af Device – Class 2 (7W) IEEE 802.3af Device – Class 3 (15.4W) [heading]AVAYA:[/heading] [heading]CISCO:[/heading] What are the power requirements for the various models of the IP phone models? CP-7902G (6.3W) CP-7905G (6.3W) CP-7910-SW (6.3W) CP-7910G (6.3W) CP-7912G (6.3W) CP-7940G [...]