Hirschmann PTN-2-C37.94 User Manual
Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1 Technical support
Release 01 02/2018 https://hirschmann-support.belden.com
User Manual
Installation
Dragon PTN Interface Module
PTN-2-C37.94 with E1/PTN-2-C37.94 with T1
2 Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1
Release 01 02/2018
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Hirschmann Automation and Control GmbH
Stuttgarter Str. 45-51
72654 Neckartenzlingen
Germany
Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1 3
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Contents
1. INTRODUCTION ......................................................................................................... 6
1.1 General ............................................................................................... 6
1.2 Manual References ............................................................................. 7
2. MODULE DESCRIPTION .............................................................................................. 8
2.1 Front Panel ......................................................................................... 8
2.1.1 Handle ........................................................................................................ 8
2.1.2 LEDs ............................................................................................................ 8
2.1.3 C37.94 SFP Port (Fiber) ............................................................................ 10
2.1.4 E1/T1 RJ-45 Ports (Copper) and Cables ................................................... 10
2.2 Functional Operation ........................................................................ 10
2.2.1 General .................................................................................................... 10
2.2.2 E1 Framing ............................................................................................... 11
2.2.3 T1 Framing ............................................................................................... 12
2.2.4 C37.94 Framing ........................................................................................ 12
2.2.5 AMI, HDB3 and B8ZS Coding ................................................................... 13
2.2.6 CES: SAToP ............................................................................................... 14
2.2.7 CES: CESoPSN ........................................................................................... 15
2.2.8 Start Sending Data ................................................................................... 19
2.2.9 SAToP Compared With CESoPSN ............................................................. 19
2.2.10 Hitless Switching ...................................................................................... 19
2.2.11 Single Path ............................................................................................... 20
2.2.12 Delay Comparison in CES (Features) ....................................................... 22
2.2.13 I/O with the Central Switching Module (=CSM) ...................................... 22
2.2.14 Synchronization / Clock Distribution / Network Timing .......................... 22
2.2.15 Short Haul/Long Haul on E1/T1 Ports ...................................................... 25
2.2.16 Test and Loopback Selftests .................................................................... 25
2.3 Onboard Interfaces ........................................................................... 25
2.3.1 Straps ....................................................................................................... 26
2.3.2 DIP Switches ............................................................................................ 26
3. TDM FRAMES/PACKET ............................................................................................. 26
3.1 General ............................................................................................. 26
3.2 Bandwidth ........................................................................................ 27
3.3 Delay ................................................................................................ 27
3.3.1 General .................................................................................................... 27
3.3.2 Delay Parameters .................................................................................... 28
3.3.3 Estimated Delay Calculation and Formulas ............................................. 29
3.3.4 Estimated Delay Examples ....................................................................... 29
3.3.5 Differential Delay ..................................................................................... 29
3.4 Tuning CES = Tuning TDM Frames/Packet .......................................... 30
4. COMPATIBILITY ........................................................................................................ 30
5. MODULE SPECIFICATIONS ........................................................................................ 31
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5.1 General Specifications ....................................................................... 31
5.2 Other Specifications .......................................................................... 31
5.3 Ordering Information ........................................................................ 31
6. ABBREVIATIONS ...................................................................................................... 31
List of figures
Figure 1 Common Example with C37.94, E1, T1............................................................................ 7
Figure 2 Front Panel ...................................................................................................................... 8
Figure 3 C37.94 SFP Connector ................................................................................................... 10
Figure 4 E1/T1 RJ-45 Connector .................................................................................................. 10
Figure 5 Detailed Function C37.94/E1/T1 Example..................................................................... 11
Figure 6 E1 Framing ..................................................................................................................... 12
Figure 7 T1 Framing ..................................................................................................................... 12
Figure 8 C37.94 Framing .............................................................................................................. 13
Figure 9 HDB3 Encoding .............................................................................................................. 13
Figure 10 T1: B8ZS Encoding ....................................................................................................... 13
Figure 11 General SAToP Example .............................................................................................. 14
Figure 12 Detailed E1 SAToP Example ......................................................................................... 14
Figure 13 General CESoPSN via C37.94 Port Example ................................................................. 15
Figure 14 Detailed C37.94 to C37.94 CESoPSN Example ............................................................. 16
Figure 15 General CESoPSN via E1/T1 Port Example .................................................................. 16
Figure 16 Detailed E1 CESoPSN Example .................................................................................... 17
Figure 17 General CESoPSN via C37.94 to E1 Port Example ....................................................... 18
Figure 18 Detailed C37.94 To E1 CESoPSN Example ................................................................... 18
Figure 19 Hitless Switching .......................................................................................................... 20
Figure 20 Single Path Enabled ..................................................................................................... 21
Figure 21 Single Path Disabled .................................................................................................... 21
Figure 22 Clocking: Application D Slaves to Application A via Dragon PTN ................................ 23
Figure 23 Clocking: Both Application A and D Slave to Dragon PTN Clock Master ..................... 23
Figure 24 2-C37.94: Side View ..................................................................................................... 25
Figure 25 Hardware Edition ......................................................................................................... 26
Figure 26 E1/T1 Configuration .................................................................................................... 26
Figure 27 SAToP, CESoPSN Bandwidth ........................................................................................ 27
Figure 28 Delays .......................................................................................................................... 28
Figure 29 Differential Delay ......................................................................................................... 30
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List of Tables
Table 1 Manual References ........................................................................................................... 7
Table 2 LED Indications In Boot Operation ................................................................................... 9
Table 3 LED Indications In Normal Operation ............................................................................... 9
Table 4 E1/T1 RJ-45 Connector: Pin Assignments ....................................................................... 10
Table 5 Comparison: SAToP CESoPSN ................................................................................ 19
Table 6 Difference Between Hitless and Protection Switching ................................................... 20
Table 7 Clocking Parameters on Port & Service Level ................................................................. 24
Table 8 TDM Frames/Packet ....................................................................................................... 27
Table 9 Estimated Delay Formulas .............................................................................................. 29
Table 10 Estimated Delay (µs) Examples ..................................................................................... 29
Table 11 Other Specifications ...................................................................................................... 31
6 Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1
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1. INTRODUCTION
1.1 General
This document is valid as of Dragon PTN Release 3.0DR.
E1 and T1 links are used worldwide to implement synchronous TDM links between two end
points. These links typically transport voice and/or data using TDM. The application of E1 or
T1 is country related. T1 is primarily used on the North American continent and Japan
whereas E1 is used in most other areas. Both carriers differ with respect to the physical
interface, the framing algorithm, signaling and network management.
An E1 service bundles together 32 TDM (Time Division Multiplex) channels whereas a T1
service bundles together 24 TDM channels. This results in an E1 service having a total
bandwidth of 2.048 Mbps and a T1 service a total bandwidth of 1.544 Mbps.
C37.94 is a standard for transmitting N times 64 kbps on an optical fiber, where N=1,2,…12.
It is a protocol used in the power industry between teleprotection and multiplexer
equipment. Teleprotection makes sure that faulty parts within a power system will be
disconnected very fast to prevent further damage within that power system. A C37.94 frame
also has a bandwidth of 2.048 Mbps and all its information is also transported in 32
timeslots, just like E1. But C37.94 is a special kind of E1 framing. Within these 32 E1
timeslots, C37.94 has its own timeslot mapping and uses N (=1 to 12) timeslots for real data,
see §2.2.4.
HiProvision (=Dragon PTN Management System) has two variants of this IFM (see also
§2.3.2b):
2-C37.94-E1-L = 2-C37.94 IFM in E1 mode;
2-C37.94-T1-L = 2-C37.94 IFM in T1 mode;
This IFM converts the C37.94/E1/T1 framing from a C37.94/E1/T1 link into MPLS-TP packets
over the Dragon PTN network, and vice versa. The destination IFM must also compensate for
possible jitter and network delays to keep everything synchronized. A packetized TDM
service is called a Circuit Emulation Service (=CES). A maximum of 16 CESs can be configured
per 2-C37.94 module.
2-C37.94 refers to ‘2 C37.94 ports and 2 E1/T1 ports’. This IFM can be used in any IFM slot of
any node. An IFM slot overview can be found in Ref. [3] in Table 1.
The main supported features are:
Packetizing of E1/T1 Framing
LAN function
Services
SAToP (=Structured Agnostic TDM over Packet) all channels transparently;
CESoPSN (=CES over Packet Switched Network) customized channel transport;
Hitless Switching / Single Path;
Synchronization
SyncE;
A common example with C37.94, E1 and T1 can be found in the figure below:
Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1 7
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Figure 1 Common Example with C37.94, E1, T1
1.2 Manual References
Table 1 is an overview of the manuals referred to in this manual. ‘&’ refers to the language
code, ‘*’ refers to the manual issue. All these manuals can be found in the HiProvision
(=Dragon PTN Management System) Help function.
Table 1 Manual References
Ref.
Number
Title
[1]
DRA-DRM821-&-*
Dragon PTN and HiProvision Operation
[2]
DRA-DRM801-&-*
Dragon PTN Installation and Operation
[3]
DRB-DRM802-&-*
Dragon PTN Nodes: PTN2210, PTN2209, PTN2206, PTN1104
[4]
DRD-DRM803-&-*
Dragon PTN Switching Module: PTN-CSM310-A
[5]
DRE-DRM805-&-*
Dragon PTN Interface Module: PTN-4-E1-L/PTN-4-T1-L
[6]
DRF-DRM811-&-*
Dragon PTN TRMs (Transmit Receive Modules: SFP, XFP)
[7]
DRA-DRM810-&-*
Dragon PTN General Specifications
[8]
DRE-DRM818-&-*
Dragon PTN Switching Module: PTN-16-E1-L/PTN-16-T1-L
MPLS-TP Dragon PTN Network
WAN (via SFP on fiber)
2-C37.94
Module
Dragon PTN
Node
Packetized C37.94/E1/T1 via
SAToP and CESoPSN
LAN1
codec
PBX
Teleprotection1
LAN2
codec
PBX
Teleprotection2
C37.94
Fiber Links
E1/T1
Links
C37.94
Fiber Links
E1/T1
Links
8 Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1
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2. MODULE DESCRIPTION
2.1 Front Panel
Figure 2 Front Panel
2.1.1 Handle
a. Insert the Module into the Node
Take the front panel handles to insert or slide the module into the Dragon PTN node. Push
the module thoroughly into the node’s backplane. Next, tighten the two fastening screws in
the front panel corners.
b. Remove the Module from the Node
Untighten the two fastening screws in the front panel corners. Take the front panel handles
to pull out and finally remove the module from the Dragon PTN node.
2.1.2 LEDs
The meaning of the LEDs depends on the mode of operation (= boot or normal) in which the
2-C37.94 module currently is running. After plugging in the module or rebooting it, the
module turns into the boot operation, see Table 2. After the module has gone through all
the cycles in the table below (=rebooted successfully), the module turns into the normal
operation, see LEDs in Table 3.
LEDs
2 E1/T1
Ports
2 C37.94
Ports
Handle
Fastening screw
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Table 2 LED Indications In Boot Operation
Cycle
PI
PF
FLT
Spare LED
RDI[1,2]
AIS[3,4]
LOS[1..4]
1 x ---
Slow blinking
---
---
---
---
2 x ---
Fast blinking
---
---
---
---
3 x ---
---
---
---
---
---
4 x --- x --- x x
x
x : LED is lit
--- : LED is not lit
The sub cycle times may vary.
The entire boot cycle time [14] takes approximately 2 minutes.
Table 3 LED Indications In Normal Operation
LED
Color
Status
PI (=Power Input)
Not lit, dark
+12V power input to the board not OK
Green
+12V power input to the board OK
PF (=Power Failure)
Not lit, dark
power generation on the board itself is OK
Red
power generation on the board itself is erroneous
FLT (=FauLT)
Not lit, dark
no other fault or error situation, different from PF, is active on the module
Red
a fault or error situation, different from PF, is active on the module
(empty)
Not lit, Green
spare
RDI<port n°>
(=Remote Defect
Indication)
Not lit, dark
- no service on this port
- service on this port: no alarms detected on backplane (=network) side,
everything fine
Orange, lit
service on this port: no network traffic or RDI detected on backplane
(=network) side
Orange, blinking
other errors different from RDI detected on backplane (=network) side
AIS<port n°>
(=Alarm Indication
Signal)
Not lit, dark
- no service on this port
- service on this port: no alarms detected on backplane (=network) side,
everything fine
Red, lit
service on this port: no network traffic or TX AIS detected on backplane
(=network) side
Red, blinking
other errors different from TX AIS detected on backplane (=network) side
LOS<port 1-2°>
(C37.94 ports)
(Loss of Signal)
Not lit, dark
- no service on this port
- service on this port: local C37.94 traffic on this front port is OK
Red, lit
service on this port: LOF on this front port
Red, blinking
other errors different from LOF received on this front port
LOS<port 3-4°>
(E1/T1 ports)
(Loss of Signal)
Not lit, dark
- no service on this port
- service on this port: local E1/T1 traffic on this front port is OK
Red, lit
service on this port: local E1/T1 signal is lost on this front port
Red, blinking
AIS, LOF or RAI received on this front port
10 Installation PTN-2-C37.94 with E1/PTN-2-C37.94 with T1
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2.1.3 C37.94 SFP Port (Fiber)
The 2-C37.94 module provides two SFP ports for long distance communication over optical
fiber. The SFPs that can be used for this port can be found in Ref. [6] in Table 1.
Figure 3 C37.94 SFP Connector
2.1.4 E1/T1 RJ-45 Ports (Copper) and Cables
The 2-C37.94 module provides two ports and each port connector has eight pins. Each port
provides one tip/ring pair. See the table and figure below for an overview and description.
Both the ports act as E1 or T1 port. This behavior can be configured via a DIP switch, see
§2.3.2b. The cables below can be ordered to connect these ports.
E1 cable (120 Ω): ordering number 942 256-201;
T1 cable (100 Ω): ordering number 942 256-200;
Figure 4 E1/T1 RJ-45 Connector
Table 4 E1/T1 RJ-45 Connector: Pin Assignments
Pin Number
Description
Cable Wire Colors
1
Rx (Receive) RING
OG 2 Rx (Receive) TIP
WH/OG
3
Not connected
-
4
Tx (Transmit) RING
BU
5
Tx (Transmit) TIP
WH/BU
6, 7 ,8
Not connected
-
2.2 Functional Operation
2.2.1 General
A teleprotection network (e.g. Teleprotection1) can be connected to the MPLS-TP Dragon
PTN network via one of the two C37.94 interface ports. An external LAN (e.g. LAN1) can be
connected to the MPLS-TP Dragon PTN network via one of the two E1/T1 interface ports.
The 2-C37.94 module can interface with 2 C37.94 and/or 2 E1/T1 lines. In Figure 1, a
common functional setup is shown.
1 8
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