Specifications

Installation and Operation Manual Chapter 1 Introduction
IPmux-24 Ver. 1.5 Overview 1-3
Timing
IPmux-24 maintains synchronization between TDM devices by deploying advanced
clock recovery mechanisms. Available timing modes are:
• Loopback (Rx clock)
• Adaptive
• Internal clock
• External clock.
System clock ensures single clock source for all TDM links. The system clock uses
master and fallback timing sources for clock redundancy. IPmux-24 provides
system clock output via external clock connector.
Advanced clock recovery mechanism complies with G.823 (clause 6)
requirements, providing frequency accuracy of up to 16 ppb. This makes the unit
suitable for timing-sensitive applications, such as cellular backhauling.
Packet Networks
IPmux-24 supports transmission over the following packet networks:
• Ethernet
• MPLS
• IP.
Ethernet
The Ethernet ports can be either UTP (10/100BaseT) or SFP-based fiber optic
(1000BaseX or 100BaseFx):
• Network (ETH 1) – SFP or UTP
• Network/user (ETH 2) – SFP or UTP
• User (ETH 3) – SFP or UTP.
The Ethernet ports accept a wide range of Gigabit and Fast Ethernet SFP-based
fiber optic interfaces. One or two ports can be ordered with built-in 10/100BaseT
interfaces.
Bridge Modes
The following bridge modes are available:
• Transparent
• Filtered (VLAN-aware and VLAN-unaware).
Rate Limiting
Traffic rate is limited at the ingress and at the egress of the network and user
ports. Frame type (broadcast, multicast or flooded unicast) is user-selectable.