From: Onyenorah, Dennis (Dennis.Onyenorah@nasdaq.com)
Date: Fri May 23 2003 - 08:23:17 GMT-3
The Cisco Call Manager V3.3 uses an 8 bit TOS bitmask value specification. (RFC 791)
You can define what the IP Phones or SCCP devices use via the CM management interface
under
Service|Service Parameters|Cisco Call Manager|
in the Cluster Wide Parameters (System - QOS) section, you should see
IP Precidence BitMask --- Default is 0xB8 (8bit TOS)
IP TOS BitMask Between CCMs -- Default 0x68 (8bit TOS)
IP TOS CCM to Devices --- DEfault 0x68 (8bit TOS)
These values can map into DSCP (6bits), 3 bit IP prec/COS values for backward compatibility.
The same could be done for CM v3.1 and 3.2 but I believe 3.1 uses a 3 bit value .
-----Original Message-----
From: Armand D [mailto:ciscoworks2001@yahoo.com]
Sent: Thursday, May 22, 2003 5:27 PM
To: ccielab@groupstudy.com
Subject: IP Phones IP precedence or DSCP ?
Hi,
Does anyone know if Cisco IP phones can mark ip
precedence or DSCP marking ?
Any info would be appriciated.
Best,
Armand
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