VCL-T1oP (4T1 over IP/Ethernet FE Version), TDM over IP / TDM over Packet / TDM over Ethernet

Description

Valiant's 'VCL-T1oP' T1 over Packet (4 T1 Port FE Version) TDM over IP equipment supports transmission of up to 2 x T1 links over IP / Ethernet, MEF or MPLS Pseudo-wire networks.

The 'VCL-T1oP' T1 over Packet (4 T1 Port FE Version) TDM over IP equipment, equipped with a powerful ARM-Cortex Processor which provides a highly reliable clock recovery mechanism for low jitter and wander control, even under variable network conditions.

4 x T1 Port T1oP (T1 over Packet) TDM over IP equipment is available with various Electrical (10/100BaseT) and Optical (100BaseFX) Ethernet port options which allow the users to implement 1+1 add-drop (Drop-Insert), Ethernet link redundancy (using Port Trunking / Port Bonding) and 802.1p based QoS mechanisms for network optimization.

The 'VCL-T1oP' T1 over Packet (4 T1 Port FE Version) TDM over IP equipment also optimizes on the network usage, such that the bandwidth used by the T1oP equipment on the packet network is limited to the corresponding to the number of T1 ports and the time-slots that are being transported over the Ethernet / packet network.

Purpose of TDM over Packet technology

Telecom companies and enterprise users can save significant network and equipment cost and generate additional revenue by offering different types of services over a single packet-switched infrastructure by the use of T1oP equipment. The T1oP equipment is also suitable for connecting to Ethernet / packet wireless equipment to achieve fast deployment of T1 services over wireless Ethernet networks. One particular application is to build T1 links with low cost Wireless LAN bridges, replacing expensive TDM / T1 microwave radios.

The 4 x T1 over Ethernet (4 T1 Port FE Version) multiplexer may be used to provide legacy TDM services over Ethernet optical fiber, or wireless Ethernet/IP networks.

How the TDM over Packet (4 T1 Port FE Version) equipment works

The T1 data streams received on the T1 interfaces are converted by the T1oP engine of the T1oP equipment to Ethernet data packets (of a fixed size) and transported over the Ethernet network with UDP / IP, MEF or MPLS headers. At the receiving end the T1oP reconstructs the original data streams by removing the IP, MEF or MPLS headers and converts the Ethernet data packets back to T1 frames using highly reliable and accurate clock recovery mechanism. The 'VCL-T1oP' (4 T1 Port FE Version) offers the user a choice of standard, T1 to packet and packet to T1 conversion mechanisms that include SAToP and CESoPSN technologies.

Key Features - T1 and T1oP Interface

  • Supports 4 independent T1 interfaces.
  • Internal, External, Adaptive, Recovered clock and Asymmetrical (One-Clock and Two-Clock) options for the T1 TDM port synchronization. Automatic clock priority selection with fall back.
  • Absolute and Differential times tamps.
  • Jitter and Wander conforms to G.823 / G.824 and G.8261 and TDM specifications.
  • Supports two Line codes - AMI and B8ZS.
  • Supports three T1 framing modes - Framed ESF, Framed SF and Unframed.
  • Supports IETF-PWE3 (pseudo-wire), SAToP and CESoPSN transport mechanisms.
  • Supports CESoPSN payload mechanism to support the fractional T1 with data rate of 64Kbps to 1.544Mbps (DS0 timeslot level). User configurable data rate from 64kbps to 1544kbps, in steps of 64kbps.
  • CESoPSN payload mechanism feature allows the user to optimize the packet switched network by limiting its usage to the corresponding number of timeslots carried by a T1 channel.
  • Supports SAToP payload mechanism to transport full T1 (transparent to the structure of the TDM frame useful for transporting framed / unframed T1 channels).
  • Supports network latency / packet delay variation / jitter buffer of up to 512ms.
  • Supports IP, MPLS and MEF8 (Metro Ethernet) addressing.
  • RJ45 - 100 ohms balanced T1 interfaces.
  • T1 Local and Remote Loop-back (RLOOP) facility for testing and diagnostics.

Key Features - Ethernet / IP Network Interface

  • Optical SFP based (100Base-FX), Electrical (10/100Base-T) and PoE Electrical (10/100Base-T) Ethernet port options.
    • 4 x 10/100BaseT Copper Ports.
    • 2 x 10/100BaseT Copper Ports, 2 x 10/100BaseT Ports with PoE.
    • 2 x 100BaseFX Optical Fiber Ports, 2 x 10/100BaseT Copper Ports.
    • 2 x 100BaseFX Optical Fiber Ports, 2 x 10/100BaseT Ports with PoE. (may use any one combination of above mentioned Ethernet Ports)
  • Power over Ethernet (PoE) (available options as above). Meets and exceeds the Telcordia GR-1089-CORE Lighting and Power Contact Protection requirements.
  • Point-to-point and point-to-multipoint applications based on IP addressing.
  • Supports drop and insert applications.
  • 1+1 Ethernet Link Redundancy / Redundant Link Protection.
  • Supports QoS, 802.1q and 802.1p based packet priority.
  • Q-in-Q Tagging.
  • Flow Control in an Ethernet Packet Networks (Regulating Traffic)
  • Port / Customer based bandwidth allocation (Port Rate Limiting – Ingress and Egress)
  • DSCP and 802.1Q / 802.1p based packet tagging and prioritization
  • MPLS, MEF and UDP tagging for Ethernet traffic.
  • Separate IP Address for TDM traffic and equipment management
  • VLAN tagging for TDM traffic and equipment access / management
  • User configurable MTU (T1oP payload) packet size up to 1500 Bytes.
  • 802.1Q Tag based VLANs Supports 1-4095 VLAN IDs.
  • Supports Packet priority assignment (IP Diffserv / DSCP).
  • UDP-specific “Special” Ethernet type.
  • In band VCCV ARP.
  • Broadcast DA

Key Features explained

VLAN Based Priority (Classifying Services) - VLAN based Priority feature allows the user to assign priorities to different VLANs carrying various types of services / traffic according based on user categories and preferences. The user may highest priority to TDM traffic and Ethernet services on a lower priority. User may also configure which TDM link should be given preference over the other TDM links, when the uplink bandwidth falls below a particular threshold.

Flow Control in an Ethernet Packet Networks (Regulating Traffic) - Flow Control feature allows the user to regulate the Ethernet traffic flow to minimize packet loss due to data bursts.

Port / Customer based bandwidth allocation (Port Rate Limiting) - Port based Ingress and Egress Ethernet Rate Limiting allows the use to assign the bandwidth as per port / service requirements in addition to provisioning traffic by using 802.1Q and 802.1p VLANs and packet priority.

Hardware Highlights

  • 19-Inch rack mountable
  • 1U form factor (44mm)
  • 1+1 Redundant Power Supplies, AC and DC, or AC plus DC.
  • Redundant power supply inputs.
  • Extended Temperature Range: (-20°C to +60°C)
  • EMI / EMC Complaint
  • Real Time battery backed clock with life in excess of 10 Years
  • Power over Ethernet (PoE) - Optional

T1 Clock recovery and synchronization techniques

  • Adaptive Clock Recovery (ACLK)
  • Recovered Clock (RCLK) / Loop-Timed Clock
  • Asymmetrical (One-Clock and Two-Clock) Clock
  • Synchronization to an External Clock (ECLK)
  • Synchronization to an Internal Clock
  • Automatic clock priority selection with fall back
  • Plesiochronous Clocking.

System Management, Monitoring and Alarm Interfaces

  • External Alarm - Dry contact relay alarms are also available at rear of the system to connect the system to an external alarm.
  • NMS (Network Management System) to monitor multiple units from single Central Location.
  • Port Trunking.
  • Supports system temperature monitoring with High Temperature and Low Temperature alarms and SNMP Traps.
  • Supports SNMP V2 Monitoring and Traps.
  • Self-test for checking system errors upon system boot-up.
  • Event Logging.
  • Clock Performance Alarms.
  • Network Performance Alarms.
  • Network Performance Monitoring and Diagnostics.
  • Online / remote upgrade of firmware.

OAM: Operation and Management Ports

  • RS232 (DB9) Serial Port.
  • 10/100BaseT Ethernet Management for In-band remote access.

System Access, Control and Management Options

  • Telnet.
  • CLI Control Interface (HyperTerminal or VT100).
  • SNMP V2 Traps (MIB File provided).
  • Windows based GUI (Graphical User Interface) for easy configuration, management and access.
  • Ability to monitor multiple units from a single NMS.
  • Password Protection.
  • Application Diagrams

    Application # 1: TDM over IP in Cellular/Mobile Backhaul (Integrating 2G/3G/LTE Networks)
    Application # 2: TDM over IP 2G/3G/LTE - Typical Application in a redundant Wireless Network (1+1 Link Redundancy)
    Application # 3: TDM over IP/Ethernet - Providing 2G/3G/LTE over an IP Cloud
    Application # 4: TDM over IP with Fractional E1 (Supports CESoPSN and SAToP)
    Application # 5: TDM over IP for 2G/3G/LTE in a redundant Wireless Network (1+1 Link Redundancy) with IEEE 1588 v2 Synchronous Ethernet
    Application # 6: TDM over IP/Ethernet - Distributing E1s, ToD (Time-Of-Day) and Frequency Synchronization over an IP Cloud using IEEE 1588v2
    Application # 7: TDM over IP/Ethernet: Using IEEE 1588 v2 to distribute E1s along with ToD (Time-Of-Day) and Frequency Synchronization over over Optical Fiber Ring
    Application # 8: TDM over IP/Ethernet: Using IEEE 1588 v2 distribute E1s, ToD (Time-Of-Day) and Frequency Synchronization over a Complex Ring and Spoke Optical Fiber Networks
    Application # 9: TDM over IP/Ethernet - Port Based Priority (Classifying Services)
    Application # 10: TDM over IP/Ethernet VLAN Based Priority (Classifying Services)
    Application # 11: TDM over IP/Ethernet Flow Control in an Ethernet Packet Network (Regulating Traffic)
    Application # 12: TDM over IP/Ethernet Port / Customer based bandwidth allocation (Port Rate Limiting)
    Application # 13: DS3 / T3 over an Ethernet / IP Networks
    Application # 14: DS3 Link Redundancy - Using Port Trunking / Bonding
    Application # 15: DS3 Link Redundancy - Using Spanning Tree Protocol
    Application # 16: E3 over Ethernet / E3 over IP Networks
    Application # 17: E3 over IP / E3 over Ethernet with Link Redundancy using port Trunking / Bonding
    Application # 18: E3 over Ethernet / Packet Link Redundancy - Using Spanning Tree Protocol
    Application # 19: E3 Link over Optical Fiber / E3 OLTE
    Application # 20: T1 over Packet Network with GPS Synchronization
    Application # 21: T1 over Packet Network with PTP Grandmaster Synchronization
    Application # 22: E1 over Packet Network with GPS Synchronization
    Application # 23: E1 over Packet Network with PTP Grandmaster Synchronization
    Application # 24: Point-to-multi-point E1 over Packet with PTP Grandmaster Synchronization
    Application # 25: E1 over Ethernet, Point-to-multi-point links over separate carrier IP Networks
    Application # 26: E1 over Ethernet, 1+1 Redundant Point-to-multi-point links over Separate carrier IP networks
    Application # 27: Water Company (Madrid - Spain)
    Application # 28: Electricity Company (Santander - Spain)
    Application # 29: E1 transmission over secured encrypted links
    Application # 30: Voice and data transmission over secured encrypted links
    Application # 31: Encrypted “Mobile” Application for Voice and Data
    Application # 32: Encrypted “Radio” Application for Voice and Data

    Data Sheet

    Data Sheettdm over ip