Plantronics APP-51 Savi/CS500 EHS Hookswitch Polycom/Digium

plantronics app-51 savi/cs500 ehs hookswitch polycom/digium view


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Plantronics Savi APP-51 Electronic Hookswitch (EHS) cable for Polycom Phones - communicates electronically with the phone, eliminating the need for the HL10 lifter. This cable is compatible with:

Plantronics CS540, CS510, CS520, Plantronics Savi WO100, Plantronics Savi WO200, Plantronics Savi WO300 Plantronics Savi WO350 , Plantronics Savi W740, Plantronics Savi W710 , Plantronics Savi W720 , Plantronics Savi W730 , Plantronics Savi W745, Plantronics Legend CS

Do not order this part if you don't have any of these headset models.

Old Poly part # 38439-11

New HP part # 85Q60AA

This cable works with the following Polycom telephone models:

  • SoundPoint IP 320/321*
  • SoundPoint IP 330/331*
  • SoundPoint IP 335
  • SoundPoint IP 430
  • SoundPoint IP 450
  • SoundPoint IP 550
  • SoundPoint IP 560
  • SoundPoint IP 650
  • SoundPoint IP 670
  • VVX 101/201 - you will need this extension cable Plantronics part# 85638-01
  • VVX 300/310
  • VVX 150/250
  • VVX 350/450
  • VVX 400/401
  • VVX 410/411
  • VVX 500/501
  • VVX 600/601
  • VVX 1500

It's also compatible with following Digium Phones:

  • Digium D40
  • Digium D45
  • Digium D50
  • Digium D60
  • Digium D62
  • Digium D65
  • Digium D70
  • Digium D80

old part# 38439-11 

note: If you have a older Plantronics "CS" wireless headset (CS55, CS50, CS351, CS361, etc), you need Plantronics APP-5 instead

*The 320/321 and 330/331 require a 2.5mm to RJ-9 adapter available from Polycom (part# 2200-11095-002)

** Note: When using a Polycom sidecar on phone and the APP-51. You require 85638-01 extension cable so the APP-51 cable can reach sidecard

Also See Savi EHS user's guide for more detail information

Plantronics APP-50

Plantronics APP-51 Installation Notes:

Software Requirements

Polycom phones must run SIP application 3.1 or higher and BootROM 4.1.0 or later, except for the SoundPoint IP 670, which must SIP application 3.0.2 or higher and BootROM 4.1.0 or later.

Polycom Phone Settings (required for the APP-51 to work)

Set the headset mode on your  Polycom phone to "Plantronics Mode" before connecting your Plantronics headset your phone:

  1. Press Menu.
  2. Navigate to Menu > Settings > Basic > Preferences > Headset > Analog Headset (On VVX 1500 phones, navigate to Menu > Settings > Basic > Preferences)
  3. Select Headset > Hookswitch Mode (if shown) 
  4. Choose Plantronics if an EHS-compatible Plantronics headset is attached with an Plantronics EHS cable.

If your caller reports an echo, the phone’s echo cancellation feature can be enabled by:

  1. Press Menu.
  2. Select Settings > Basic > Preferences > Headset > Echo Cancellation > Enabled.

Or contact your IT support team to change the phone sig.ctg configuration file as follows:

  • voice . aec . hd . enable = 1
  • voice . aes . hd . enable = 1

This product was added to our catalog on Wednesday 22 February, 2012.
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This product was added to our catalog on Wednesday 22 February, 2012.
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