Cisco Systems IPMUX-1E operation manual Physical Description, QoS, Timing

Chapter 1 Introduction IPmux-1/1EInstallation and Operation Manual

QoS

QoS supports:

•Labeling IP level priority (ToS/Diffserv) for TDMoIP packets

•VLAN tagging and priority labeling according to IEEE 802.1p&q for TDMoIP packets.

The user can configure the ToS (Type of Service) of the outgoing TDMoIP packets. This allows an en-route Layer 3 router or switch, which supports ToS, to give higher priority to IPmux-1/1E TDMoIP traffic for delay-sensitive and secure applications. IPmux-1 allows you to configure the WHOLE ToS byte field, since different vendors may use different bits to tag packets for traffic prioritization. This also enables operation according to various RFC definitions (for example RFC 2474, RFC 791). The user can also configure VLAN priority bits for

Level 2 Priority.

Timing

IPmux-1 maintains synchronization between TDM devices by deploying advanced clock distribution mechanisms.

Available timing modes are:

•Loopback

•Adaptive

•Internal Clock

•External Clock.

Note For more details see Timing Modes in Section 1.3.

1.2 Physical Description

IPmux-1E is a 1U high 19-in (IPmux-1 is a 1U high ½ 19-in), easy-to-install standalone unit. A rack mounting kit option is available (ordered separately).

Figure 1-7shows a 3-dimensional view of IPmux-1 and IPmux-1E.

1-8 Physical Description