Access Layer Configuration - Cisco Catalyst 2000 Configuration Handbook

256 Cisco LAN Switching Configuration Handbook
Table 14-2 Voice Protocol Port Numbers
Voice Protocol
Skinny
H.323
SIP
MGCP
Megaco
H.248
RTP

Access Layer Configuration

1. (Optional) Establish a trust boundary at the access layer.
a. (Optional) Trust QoS from a Cisco IP Phone:
Port
TCP 2000
TCP 2001
TCP 2002
TCP 1718
TCP 1719
TCP 1720
TCP 11000 to 11999
UDP/TCP 5060
TCP 2427
TCP 2727
UDP/TCP 2944
UDP/TCP 2945
UDP port negotiated by
voice-call signaling protocol
IOS L3
(
interface) mls qos vlan-based
(interface) mls qos trust cos
IOS L2
(interface) mls qos trust cos
A single QoS policy can be applied to all voice traffic from IP Phones on a com-
mon voice VLAN. This is only possible on Layer 3 switches. Otherwise, the
inbound CoS values can be trusted when IP Phones classify and mark CoS from
their own voice and data access ports. The IP Phone is instructed to control QoS
trust with the configuration in Step 3.
Description
Skinny Client Control Protocol
(SCCP)
Skinny Station Protocol (SSP)
Skinny Gateway Protocol
(SGP)
Gatekeeper messages
Gatekeeper RAS
H.225 call control
H.245
Default server ports; can also
be arbitrarily chosen
Call agents to gateway
Gateway to call agents
Text call control messages
Binary call control messages
Voice payload transport