User manual POLYCOM EF2211

[. . . ] Vortex EF2211/EF2210 Reference Manual VORTEX EF2211/EF2210 REFERENCE MANUAL Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pre-Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 EF2211/EF2210 Front and Rear Panels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Mounting the EF2211/EF2210 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Connecting the EF2211/EF2210 to Other Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] This must be set before you can use the unit and does not need to be set again unless you use the unit in a different country. Dial Tone Gain. EF2211/ EF2210 Phone Control submenu © Polycom, Inc. 29 VORTEX EF2211/EF2210 Reference Manual LCD MENU STRUCTURE INPUTS The input menu allows the user to adjust functions related to the input signals to the EF2211/EF2210. This menu contains ACOUSTIC ECHO CANCELLATION, AUTOMATIC GAIN CONTROL, AGC MAXIMUM, AGC MINIMUM, GAIN ADJUST, LEVEL MIC/LINE, MUTE, NOISE CANCELLATION, NOISE CANCELLATION LEVEL, PHANTOM POWER, REFERENCE ASSIGN, and AEC SUPPRESSION. The menu is organized around the Inputs (1, T, A and B), so that you first select an input and then select settings for that input. This input is only available on the EF2211. Inputs 1, T, A, B Acoustic Echo Cancellation (In 1) Automatic Gain Control (AGC), In 1, T AGC Maximum (In 1, T) AGC Minimum (In 1, T) Gain Level Mic/Line (In 1) Mute Noise Cancellation (In 1, T) Noise Cancellation Level (In 1, T) Phantom Power (In 1) Reference Assign (In 1) AEC Suppression (In 1) Dynamics Processing (In T) LEC Suppression (In T) Line Echo Cancellation (In T) Acoustic Echo Cancellation. This allows you to enable or disable the acoustic echo canceller on channel 1. Sets the maximum gain value that the AGC can apply for Inputs 1 and T. AGC Min (Inputs 1, T). Sets the minimum gain value that the AGC can apply for Inputs 1 and T. Gain. The default setting is 15 dB for microphone signals and 0 dBu for line level signals. Level (Input 1). This allows you to enable or disable noise cancellation. Noise Cancellation Level (Inputs 1, T). Use this parameter to turn phantom power On or Off for input 1. Echo Canceller Reference (Input 1). The values correspond to the following settings: 1 = No Suppression, 2 = Light Suppression, 3 = Heavy Suppression, 4 = Half-Duplex. Line Echo Cancellation (Input T). Enables or disables the echo cancellation on the phone line. Dynamics Processing (Input T). Enables or disables compression on Input T. VORTEX EF2211/EF2210 Reference Manual 30 Technical Support: 800. 932. 2774 LCD MENU STRUCTURE LEC Suppression (Input T). Sets the amount of suppression used the line echo canceller (LEC). OUTPUTS The OUTPUT menu contains GAIN, NOM ACTIVE, and MUTE. As with the INPUT menus, this is done on a per channel basis. Outputs Output Gain Mute Output NOM Attenuation On/Off Output Delay Enable Output Delay Dynamics Processing (Out T) NOTE: Output T is the outgoing phone signal. Though the EF2211/EF2210 allows for positive output gain, you should always try to adjust input gains to a good level so that the output gain is 0 dB. If you find that you need a positive output gain from the EF2211/ EF2210, first check your input gain to make sure you are getting a good level (around 0dB). Then, for the best gain structure, use your amplifier to raise the volume in your system. Mute Output. This allows you to select whether the NOM attenuator is active for a particular output channel (Outputs 1, A, B, T). The NOM attenuator will attenuate the output signal by 10*log10(NOM) where NOM is the number of open microphones in that particular output channel. NOM is calculated based on the number of open microphones for each signal that is in the output. [. . . ] If your Vortex product is not covered by our warranty, call us at (800) 932-2774 for advice about whether we will repair your Vortex product and for other repair information, including charges. Polycom, at its sole discretion, may replace rather than repair your Vortex product with a new or reconditioned one of the same or similar design. The limited warranties and remedies set forth above are exclusive and in lieu of all other warranties, whether oral or written, express or implied. Polycom specifically disclaims any and all implied warranties, including, without limitation, the warranties of merchantability and fitness for a particular purpose. No User Serviceable Parts This product contains no user serviceable parts. [. . . ]