TDMoIP Time Division Multiplexing over IP offers advantages over Voice over IP ( VoIP ) TDMoIP is a protocol for extending circuits over IP networks. TDMoIP offers several advantages over VoIP. TDMoIP is simpler and less expensive than VoIP.  TDMoIP is transparent to protocols and signaling.  TDMoIP maintains the integrity of framed or unframed T1s and E1s. This means that legacy PBXs can communicate over IP with no loss of functionality. TDMoIP supports all modem and fax rates and is suitable for any sync/async data protocol.  Give us a call and let us help you determine if a  TDMoIP solution is right for you. A leader in the TDMoIP is RAD data communications.

Features of the RAD IPmux-1 TDMoIP gateway

	The RAD IPmux-1 is a TDMoIP gateway enabling E1/T1 circuit extension over IP networks
	Supports synchronous TDM-based services over IP and Ethernet networks
	Simple configuration for a single E1 or T1 port over an Ethernet uplink
	Supports CAS signaling and is totally transparent to all other signaling protocols running over E1 or T1
	Extends either a framed (full or fractional) or an unframed E1 or T1 circuit
	10/100BaseT or 100BaseF uplink to the network
	QoS support: Labeling IP level priority (ToS) VLAN tagging and priority labeling according to IEEE 802.1(p&q)
	The RAD IPmux-1 is a TDMoIP gateway low processing delay (under 3 msec)
	Enables synchronous clock distribution across IP-based networks
	Compensates for packet delay variation up to 300 msec
	Management interfaces: SNMP, TELNET, TFTP and XMODEM with enhanced management tools and features
	The RAD IPmux-1 is a TDMoIP gateway is a compact, 1U high enclosure

Decription of the RAD IPmux-1 for TDMoIP

IPmux-1 provides a compact, minimal configuration solution for transporting E1/T1 services over IP and Ethernet based networks. IPmux-1 takes the data stream from its E1/T1 port and converts it to packets for transmission over the network. The addressing scheme of these packets is IP. These packets are transmitted via the IPmux-1 Ethernet network port to the network. A second IPmux-1 at the remote location converts the IP packets back to TDM traffic.

IPmux-1 is a standard IP device, supporting ICMP (ping), ARP, next hop and default gateway capabilities.

PERFORMANCE OF THE RAD IPmux-1 TDMoIP gateway

	IPmux-1 can achieve end-to-end processing delay as low as 3 msec, using high-performance buffering and forwarding techniques.
	IP packet size is configurable. Greater packet length results in greater processing delay, yet smaller bandwidth overhead.
	An enhanced buffering mechanism compensates for packet delay variation (jitter) of up to 300 msec in the network.

QOS SUPPORT

	The RAD IPmux-1  TDMoIP gateway supports VLAN tagging and priority labeling according to 802.1(p&q)
	The user can configure the ToS (Type of Service) of the outgoing IP frames. This allows an en-route layer-3 router or switch, which supports ToS (or Diffserv), to give higher priority to IPmux-1 traffic for delay-sensitive applications.
	Assigned, IANA registered UDP socket number for TDMoIP simplifies flow classification through switches and routers.

TIMING

IPmux-1 maintains synchronization between TDM devices by deploying advanced clock distribution mechanisms. The clocking options are: Internal - The master clock source for the TDM circuit is provided by the IPmux-1 internal clock oscillator Loopback - The transmit clock is derived from the E1/T1 port's receive clock. Adaptive - Clock is recovered from the Ethernet network interface.

IPmux-1 is available with an Ethernet port which provides the uplink to the network: UTP option - standard 10/100BaseT half/full duplex port with auto-negotiation support. If auto-negotiation is disabled, IPmux-1 capabilities can be configured to any of the following: 100BaseT - full duplex 100BaseT - half duplex 10BaseT - full duplex 10BaseT - half duplex. Fiber option - standard 100BaseF full duplex port (see Table 1).

Framing

Two types of TDMoIP service are offered: Unframed - IPmux-1 extends full E1/T1 circuits transparently across the IP network, regardless of framing structure Structured - IPmux-1 can be configured for fractional E1/T1 services over IP networks. CAS can be enabled.

E1 OR T1 PORT AVAILABLE FOR THE RAD IPmux-1

	One standard E1 or T1 port provides connectivity to any standard E1 or T1 device.
	Integral LTU/CSU can be enabled for line protection and long haul applications.
	Alarm detection and insertion are supported together with error statistics. SES/UAS statistics, LOS/AIS physical layer alarms and remote loop/local loop test modes are all supported. Standard E1 or T1 alarms are supported end-to-end.

POWER SUPPLY

RAD IPmux-1 is available with either an AC or a DC power supply. The AC power supply supports 100 to 240 VAC and the DC power supply supports -36 to -72 VDC.

Table 1. Fiber Options with the RAD IPmux-1

Interface Type	Wavelength (nm)	Optical Power (dBm)		Receive Sensitivity (dBm)	Optical Budget (dBm)	Loss (dBm/km)		Distance *(km)
		Min	Max			Min	Max	Min	Max
Multimode	1300	-20	-14	-31	8	1	4	2	4
Single mode						0.5	0.8	10	16

* Permitted fiber optic cable length differs according to fiber characteristics, splices, and connectors.

Optical Budget Calculation:
Optical Budget [dBm] = Receive Sensitivity - ½Optical Power½ - 3 (Aging)

Distance Calculation:
Min Distance = Optical Budget/Maximum Loss
Max Distance = Optical Budget/Minimum Loss

DIAGNOSTICS & MANAGEMENT OF THE TDMoIP IPmux-1

	IPmux-1 supports remote loop and local loop testing. End-to-end alarm generation and end-to-end AIS indication are also provided. When a local E1 or T1 port receives an AIS, it is passed to the remote port via the Ethernet/IP network. If a local Ethernet port is not connected, an AIS indication will be generated both in the local and the remote devices.
	On the E1 or T1 port, SES and UAS statistics are collected in 15-minute intervals and are stored for 24 hours (96 intervals). E1 or T1 physical layer alarms (LOS, AIS, LOF, LCV) are also supported.
	IPmux-1 performs an internal built-in test (BIT) after power up. The results of the test are visible via the local terminal.
	IPmux-1 monitors LAN and IP layer network condition statistics such as packet loss and packet delay variation (jitter). The events are stored in log files.
	Software download is supported via the local terminal using XMODEM or remotely using TFTP. After downloading a new software version, IPmux-1 automatically saves the previous version in non-volatile memory for backup purposes. Similarly, copies of the configuration file may be downloaded and uploaded to a remote workstation for backup and restore purposes.
	IPmux-1 can be configured and monitored locally via an ASCII terminal, or remotely via Telnet or RADview.
	RADview HP OpenView, RAD's SNMP-based network management system, provides a user-friendly graphical display that allows monitoring and configuring of multiple IPmux-1 devices. Fault isolation, statistics and event gathering are available. RADview HP OpenView can hold a complete predefined IPmux-1 configuration to shorten and simplify field installation.

Ordering the IPmux for TDMoIP

IPmux-1/#/+/&
TDMoIP gateway

#	Specify power supply:
	AC for 100 to 240 VAC
	DC for -36 to -72 VDC
+	Specify supported service:
	E1 for E1 signal, with RJ-45 connector
	T1 for T1 signal, with RJ-45 connector
	E1CX for E1 signal, with mini BNC connectors
&	Specify network port:
	UTP for 10/100BaseT port with RJ-45 connector
	MM-SC for 100BaseF port with multimode SC connector
	SM-SC for 100BaseF portwith single mode SC connector

RM-25
Hardware for mounting one or two units in a 19-in rack