Polycom SoundStructure TEL1 Manual

November 2016 |3725-42478-001A

HARDWARE INSTALLATION GUIDE

Polycom®SoundStructure®TEL1 and TEL2

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Polycom, Inc. 3

SoundStructure TEL1 and TEL2

The Polycom SoundStructure®TEL1 and TEL2 telephony interfaces are plug-in cards for the

SoundStructure C16, C12, C8, and SR12 audio processing devices. The TEL1 is a single-line PSTN

interface and theTEL2 is a dual-line telephony interface - simultaneously supporting two independent telco

calls.

The SoundStructure C16, C12, and C8 products feature acoustic echo cancellation, noise cancellation,

equalization, feedback elimination, and automatic microphone mixing on all audio inputs. In addition, there

is a full matrix mixer, dynamics processing, delay, and submix processing. The SoundStructure SR12 does

not include acoustic echo cancellation processing but does include noise cancellation, automatic

microphone mixing, matrix mixing, equalization, feedback elimination, dynamics processing, delay, and

submix processing.

This manual provides instructions for installing the TEL1 and TEL2 telephony interface products. For

information on how to terminate connections to the SoundStructure products, see the SoundStructure

Hardware Installation manual and for information on how to configure the SoundStructure devices, refer to

the Design Guide for the Polycom SoundStructure manual.

What’s Included With SoundStructure TEL1 and TEL2

The SoundStructure TEL1 product includes the TEL1 plug-in card, this manual, and a 15-foot long

telephonecableasshown in thefollowingfigure.If a differentlengthtelephonecableisrequired,a minimum

of 26 AWG telephony cable should be used.

PHONE LINE

Hardware Installation Guide for Polycom SoundStructure TEL1 and TEL2

Polycom, Inc. 4

The SoundStructure TEL2 package includes the TEL2 plug-in card and two 15-foot long telephone cables

as shown in the following figure.

Tools Required

A Phillips head screw driver is required to remove the blank rear-panel plate from the SoundStructure

device.

Installation

Each SoundStructure device can have one plug-in card installed for a total of eight plug-in cards in a

collection of eight SoundStructure devices. When installing more than one plug-in card in an installation, it

is recommended to use the plug-in slot from the top device first and continue sequentially down through the

collection of devices as additional plug-cards are added. This will ensure a consistent physical channel

numbering of the telephony physical channels. See the discussion of physical and virtual channels in the

Design Guide for the Polycom SoundStructure manual.

Warning

Note: If more than one plug-in card is used in an installation of multiple

SoundStructure devices, use the plug-in slot from the top SoundStructure device

first and continue sequentially down through the collection of devices as additional

plug-cards are added.

Warning: Do not insert a plug-in card while the SoundStructure is powered on.

Failure to remove power prior to installing the plug-in card may damage the plug-in

card and/or the SoundStructure device.

LINE 2 LINE 1

Hardware Installation Guide for Polycom SoundStructure TEL1 and TEL2

Polycom, Inc. 5

To install a plug-in card, follow these steps:

1If plugged in, unplug the AC power cord from the SoundStructure device.

2Remove the blank plate and screws from the expansion slot (see below).

3Insert the plug-in card into the slotted rails and push until it is tight into the slot.

4Tighten the thumbscrews on the rear-panel of the plug-in card.

5If no further installation steps are required, plug in the AC power cable; otherwise, continue with the

remainder of the installation steps described in the SoundStructure Hardware Installation manual

prior to applying power.

When the system boots up, the telephony card will be discovered automatically.

PIN 2: TXD

PIN 3: RXD

PIN 5: GROUND

PIN 7: CTS

PIN 8: RTS

LAN C-LINK2 OBAM IR

RS-232

IN OUT 12V

PIN 2: TXD

PIN 3: RXD

PIN 5: GROUND

PIN 7: CTS

PIN 8: RTS

LAN C-LINK2 OBAM IR

RS-232

IN OUT 12V

PHONE LINE PIN 2: TXD

PIN 3: RXD

PIN 5: GROUND

PIN 7: CTS

PIN 8: RTS

LAN C-LINK2 OBAM IR

RS-232

IN OUT 12V

Hardware Installation Guide for Polycom SoundStructure TEL1 and TEL2

Polycom, Inc. 6

Connecting To The Telephone Line

SoundStructure TEL1

The SoundStructure TEL1 has a LINE interface that should be connected to the telephone line that comes

from the local PBX or directly from the telephone central office. As shown in the following figure, the LINE

interface is typically connected to the telephone wall plate that serves as the PSTN connection and the

SoundStructure TEL1 PHONE interface is available to support an optional telephone handset.

The optional telephone handset may be used when privacy is required or for initiating a telephone call.

When the TEL1 LINE interface is on-hook (in other words, hung up), the telephone line that is plugged into

the LINE connector is passed through to the PHONE interface, allowing the telephone handset to hear dial

tone and initiate calls once the optional handset is taken off-hook.

When the SoundStructure TEL1 device takes its LINE interface off-hook by using the SoundStructure API

(See the SoundStructure Command Reference manual) phone_connect command, the audio from the

telephone LINE interface is routed through the SoundStructure TEL1 andinto the SoundStructure for audio

processing. When off-hook, the TEL1 seizes the line from the handset and will not release it to the handset

until the TEL1 is placed back on-hook (in other words, hung-up).

To use the optional telephone handset when the SoundStructure TEL1 interface is off-hook, take the

handset off-hook by using theAPI command phone_connect and set the value to 0 for that telephone line.

This will release the telephone audio paths from the SoundStructure device and re-enable them to the

PHONE interface. The handset is then active and can be used to transmit and receive audio. Hanging up

the handset at this point will terminate the telephone call.

PIN 2: TXD

PIN 3: RXD

PIN 5: GROUND

PIN 7: CTS

PIN 8: RTS

LAN C-LINK2 OBAM IR

RS-232

REMOTE CONTROL 2

IN OUT 12V

REMOTE CONTROL 1

PHONE LINE

Hardware Installation Guide for Polycom SoundStructure TEL1 and TEL2

Polycom, Inc. 7

SoundStructure TEL2

The SoundStructure TEL2 has a LINE1 and a LINE2 interface that can both be connected directly to two

analog telephone lines that comes from the local PBX or directly from the telephone central office as shown

in the following figure.

Note that the TEL2 interface does not support an optional handset - both telephone connectors on the rear

of the TEL2 are to be connected to analog telephone lines.

Using The TEL1 and TEL2

The SoundStructure TEL1 and TEL2 cards are configured through the SoundStructure Studio software as

described in the Design Guide for the Polycom SoundStructure manual.

The country setting of the telephone interface must be set prior to first use of the telephone line.The country

codemaybesetbyclickingonthephonesettings button for thechannelthatrepresentsthetelephoneinput.

This will show a user control, as shown in the figure below, that allows the selection of the country code for

the desired region.

The line voltage and loop current are always active and allow for diagnostics of the telephone line. See the

SoundStructure Command Reference Guide for more information on how to query the line voltage and loop

current values.

Once the country code is set, the phone line may be tested by clicking the phone icon. This will take the

selected phone line off-hook. Assuming the signal routing is correct through the matrix, and the phone line

is plugged in and active, dial tone will be heard in the local room.

PIN 2: TXD

PIN 3: RXD

PIN 5: GROUND

PIN 7: CTS

PIN 8: RTS

LAN C-LINK2 OBAM IR

RS-232

REMOTE CONTROL 2

IN OUT 12V

REMOTE CONTROL 1

LINE 2 LINE 1

Hardware Installation Guide for Polycom SoundStructure TEL1 and TEL2

Polycom, Inc. 8

Troubleshooting

Problem Solution

No audio is heard on the handset

when it is plugged into the PHONE

interface on the TEL1

Check that the TEL1 is on-hook so audio

is routed to the handset.

Check that the handset is plugged into the

PHONE interface, the telephone line is

plugged into the LINE interface, and check

that the phone line plugged into the LINE

interface is an analog phone line (POTS)

and not a digital line.

No loop current or line voltage is

measured on the Phone Settings

screen

If there are multiple TEL1 or TEL2 cards

make sure the correct phone line is

selected. On the TEL2, ensure you are

viewing the correct virtual telco channel

associated with the physical phone line.

Ensure sure the telephone line is plugged

in and active by plugging an optional

handset directly into telephone line and

seeing if dial tone is present.

Hardware Installation Guide for Polycom SoundStructure TEL1 and TEL2

Polycom, Inc. 9

Regulatory Notice and Warranty

Refer to the SoundStructure Hardware Installation Guide for Regulatory and Warranty information.

Can’t take the phone off-hook with the

phone_connect API command Ensure the desired virtual channel name

is spelled properly and the command

syntax is correct as described in the

SoundStructure Command Reference

document.

Don’t hear dial tone in the room when

the TEL1 or TEL2 LINE interface is

taken off-hook

Check that the loop current and line

voltage are shown on the phone settings

screen and that they change when the

phone is taken off-hook.

Check that the telco channel is unmuted

and routed properly through the

SoundStructure matrix to the amplifiers

that are driving audio into the local room.

Check that the local room amplifiers are

connected to the correct physical output

channels on the SoundStructure device as

confirmed on the wiring page within

SoundStructure Studio.

Problem Solution

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