JANUS REMOTE COMMUNICATIONS P01 POTSwap Wireless Cellular Connection User Manual

JANUS REMOTE COMMUNICATIONS P01 POTSwap Wireless Cellular Connection

POTSwap General Description

The POTSwap allows landline telephones and modems to replace their POTS (plain old telephone service) connection with a wireless cellular connection. An internal landline modem allows legacy dial-up modem equipment to connect to remote TCP/IP networks. Fixed location voice applications can connect directly to the PSTN (public switched telephone network). Both dial-in and dial-out data and voice applications are supported. An FXS connection (RJ11 jack) provides complete Central Office emulation including dial tone, ringing and busy signal generation as well as DTMF detection and generation. The POTSwap emulates all the functions of a wired telephone connection, is fully compatible with all common modem standards and can be configured to emulate all international telephone line standards. Wireless connectivity is provided by the Janus line of Plug-In Terminus terminal modems which provide support for all current mobile network technologies with service available from numerous wireless carriers. Configuration of the POTSwap can be achieved via a local serial interface connection.

Plug-In Terminus

Cellular communication for the POTSwap is powered by Plug-In Terminus terminals. Plug-In Terminus offer easy integration and interchangeability of communication protocols between GSM/GPRS, CDMA, UMTS, EVDO and more by combining full M2M functionality with the flexibility of a standard “plug-in” DIP design. These terminals share the same mechanical footprint and offer users the ability to configure their applications for communications via any cellular protocol. The POTSwap provides one platform that supports current cellular technology with the future in mind.

Operation

Set-Up:
Operating the POTSwap with voice (telephone) or data (modem) equipment can be achieved through the following steps:

1. Gather the required equipment:
2. POTSwap (with included Plug-In Terminus terminal module)
3. Power Supply – This can be hard-wired from a user supplied power source via the terminal block header (See section 8 – Compatible Terminal Block Connectors) or using the optional wall transformer (See section 10 – Accessories).
4. Cellular antenna – An optional cellular antenna is available (See section 10 – Accessories).
5. Activated Plug-In Terminus terminal –
6. Install a SIM card if required. (See SIM Card Installation section)
7. Connect a cellular antenna to the SMA connector labeled ‘CELLULAR’. This can be a local antenna or a remote antenna connected by a coaxial cable. (See section 10 Accessories section.)
8. Connect power to the unit.

Once powered, the unit should show a connection to the cellular carrier within a minute. This will be indicated by a rapidly flashing GREEN ‘STATUS’ LED, a blinking ‘CELLULAR’ LED, and a steady signal strength indication on the Received Signal Strength LED stack.

Voice Operation

Placing calls:
Manual telephones: When the connected telephone device is taken off hook, the POTSwap will present an audio dial tone signal. Dialing can proceed, and must consist of a ten digit phone number that includes the area code. Eleven digit dialing is accepted when the first digit is a ‘1’. Digits must be entered with no more than 6 second delays between them. If a pause of more than 6 seconds between digits occurs, the dialing process will terminate. The telephone device will need to be placed on-hook before attempting to place another call. Automated dialers: Telephone devices that automatically take the phone off- hook and place a call to a fixed telephone number are compatible with the POTSwap. Dialing digits should not be sent faster than 100 ms per digit, with a minimum DTMF tone duration of 45 ms.

Receiving calls:
Incoming calls will cause the POTSwap to generate a ringing signal on the phone line. Taking the connected telephone line off-hook will answer the incoming call. Note that cellular carriers typically impose a 30 second limit on unanswered ringing before a call is transferred to a voice mail system.

Call Disconnect:
A call can always be terminated by placing the connected telephone equipment on hook. If a cellular call is terminated on the carrier side (the result of a connected party ending the call or due to loss of signal) the POTSwap will use an OSI (Open Signaling Interval) to aid in disconnecting automated type telephone equipment. It removes the voltage from the phone line connection for a short time to signal that the call has been terminated. The OSI interval can be adjusted using the user configuration menu.

Data Operation (Future firmware feature):
Telephone modem equipment can be connected to the POTSwap for the purpose of converting a legacy landline data connection to a cellular connection. The POTSwap can simulate the remote dialed modem and transfer the data using a TCP/IP connection. At the remote location, the accommodation has to be made for the change in data transport technology (dial-up modem to internet connection). While this may require modifications to the application software, it may also be possible to support legacy applications with the use of an additional TCP/IP to serial bridge application on the remote host.

Data Operation – Modem to Server
Alternatively, legacy modem to modem communications can be achieved using a POTSwap at each end of the connection as illustrated below. Note that all data communications requirements will be different, and modifications to the POTSwap firmware may be required to support specific operations. Please contact Janus Remote Communications for details.

Configuration

Configuration of the POTSwap is available via communications with the SERIAL PORT connection. Configuration can be accomplished by connecting a DTE terminal device (e.g. laptop or desktop computer running a terminal emulator) to the SERIAL port using a straight-thru DB9 serial cable (DB9-M to DB9-F). Newer computers may require a USB to serial port adaptor to complete the connection.

Default communications protocol is 115200 baud, 8-N-1 (8 data bits, no parity, 1 stop bit) with no handshaking. When the POTSwap is first powered on, it will output something similar to the following:

WireLine II Board – POTSwap Audio via digital interface DVI, PCM to SLIC HE910 Power-Up Mode Board has SiLabs Wire Line Modem WireLine_Open Included in this output are the current configuration settings. Several of these parameters are user configurable and can be adjusted by entering the CONFIG command during the power-up sequence. About 15 seconds following the application of power, the unit offers a short interval wherein the user can enter the terminal configuration menu. The following text will be output: WireLine II Board – POTSwap Entering Terminal Mode, 10 seconds to type first command Type ? for help, Q to exit FW: HH:MM:SS MTH DY YEAR READY At this point the user has 10 seconds to enter one of the following commands followed by a line termination (‘Enter’ key on PC’s):

TERMINAL MENU COMMANDS

• COMMAND FUNCTION
•  H Outputs the current menu options.
• QUIT Exits the menu and causes the POTSwap to proceed with the normal operation.
• DEBUG xx Factory use only
• DUMP Adr Len Factory use only
• XMODEM Download upgrade binary
• REBOOT Restart Application
• CONFIG Configure Settings

These commands are NOT case sensitive. Terminal menu commands operate as follows: ?, H: Entering a ‘?’ or ‘H’ character will output the Terminal menu command menu again. It can be useful if the menu has scrolled off of a screen. Q ,QUIT: Entering ‘Q’ or ‘QUIT’ will exit the DEBUG menu and continue with the normal start-up and operation of the POTSwap. DEBUG xx: DO NOT USE – Factory use only. DUMP Adr Len: DO NOT USE – Factory use only. XMODEM: Used for firmware upgrades. REBOOT: Entering ‘REBOOT’ will restart the POTSwap, similar to pressing the RESET button. CONFIG: Entering ’CONFIG’ will cause the configuration menu to be output: The configuration menu lists the name of the parameter, the current setting (in brackets), and the range or values of settings available. These settings may vary depending on the model of Plug-In Terminus terminal used in the POTSwap. Following the list of parameters are options for changing the configuration settings or leaving this menu: M, D, X, and Q. These single character command options can be entered in upper or lower case, and no enter key is required.

CONFIGURATION COMMANDS

• COMMAND FUNCTION
• M – MODIFY Enter the parameter modification menu.
• D – DEFAULTS Set all parameters to their default (factory) value.
• X – EXIT AND SAVE Save changes and exit the configuration menu.
• Q – QUIT AND DISCARD CHANGES Discard changes and exit the configuration menu

External Interfaces

Front Panel

RSSI INDICATOR

Received Signal Strength Indicator
A stack of 4 green LED’s on the left side of the front panel indicate the relative signal strength of the cellular radio signal. It is analogous to the ‘bars’ display on a cellular telephone handset. If no signal is detected, the LED’s on the stack alternately illuminate from bottom to top and back in a ‘scanning’
manner

Rear Panel

Power connectors:
Two types of power connector are provided on the POTSwap. These two connectors are connected directly together internally, and are simply provided as a user convenience The negative terminal of the power supply is connected to the enclosure. Power supply range can be found in the Specifications section. Terminal Block Header: This is an industry standard 5.08 mm header that accepts a variety of terminal blocks, including screw terminal, spring clamp and crimp terminal type. See Appendix A – Compatible Terminal Block Connectors. Circular Jack: The circular DC jack has a 6 mm hole diameter and a 2 mm center pin. It is designed to accept a 5.5 mm diameter plug with a 2.1 mm center hole and a 9.5 mm barrel length. The center pin is the positive terminal.

Antenna Connectors:
CELLULAR: A standard SMA connector is provided for connecting a cellular antenna. The placement of the antenna affects connectivity; a remote antenna location may be necessary in some situations. GPS: This is an optional antenna connector that supports a GPS receiver available on some Terminus Plug-in Terminal devices.

Serial Port:
The female DB9 connector is configured as DCE (Data Communications Equipment) and provides a data path for user configuration, firmware uploads and debug support.

SERIAL PORT PINS

Default communications protocol is 115200 baud, 8-N-1 (8 data bits, no parity, 1 stop bit) with no handshaking

SERIAL COMMUNICATION PROTOCOL:

• PARAMETER SETTING
• Baud rate 115200
• Data bits 8
• Parity bit None
• Stop bits 1
• Handshaking None

SIM Card Installation

The POTSwap model HSPA910PS requires the installation of an activated SIM card for operation. The SIM card installation can be performed as follows:

Requirements:

• POTSwap containing a Plug-In Terminus with SIM card socket (model HSPA910PS).
• SIM card
• T10 TORX screwdriver

Procedure:

1. Disconnect all external cables from the POTSwap. Remove the four TORX (T10) screws from the rear enclosure panel (the end that contains the POWER and SERIAL PORT connectors).
2. Slide the circuit board out of the case
3. With the circuit board exposed, the SIM card socket is on the cellular radio module. Slide the card holder (the top section of the SIM card socket) towards the outer edge of the POTSwap to unlock it (as shown in the figure below). The card holder is hinged on the outer edge – lift it up and slide the SIM card into the holder, flat end first, chamfered end up. The gold contacts on the SIM card will face down when the SIM card holder is closed. Slide the card holder towards the center of the POTSwap to lock the card in place.
4. Slide the board back into the enclosure making sure that the front panel components align properly with the enclosure openings. Install the four TORX screws and tighten.

Specifications

Interfaces

Compatible Terminal Block Connectors

The POTSwap has a 0.200” terminal block header, also referred to as a 5.08 mm Eurostyle connector. It supports a variety of plug-in terminal block types, including screw terminal, spring contact and crimp terminals. Manufactures for these terminal blocks include:

• Camden Electronics
• FCI Electronics
• Molex
• OST (On Shore Technology)
• Phoenix Contact
• TE Connectivity (Tyco/Buchannan)
• Weidmüller
• Würth Elektronik

Ordering Information

• POTSwap MODEL DESCRIPTION
• HSPA910PS v1.0 HSPA+/UMTS/EDGE/GPRS/GSM
• EVDO910PS v3.0 EV-DO (Verizon) (coming soon)

Accessories

The following accessories are available from Janus Remote Communications

• ACCESSORY DESCRIPTION JANUS STORE PART NUMBER
• POWER SUPPLY Wall transformer with circular DC connector, 12V 2A MC-0004
• ANTENNA Indoor 5-band GSM/CDMA/UMTS 3G ANT-0003
• MOUNTING KIT Mounting bracket w/ set screw (set of 2) MCE-0331

Revision History

• Revision Revision Date Note
• P00 11/23/13 Preliminary POTSwap User Manual Release
• P01 03/03/14 Overall Product Update/Changes

Division of The Connor-Winfield Corporation 2111 Comprehensive Drive Aurora, Illinois 60505 630.499.2121 Fax: 630.851.5040 www.janus-rc.com

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