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