Avaya 120A4 Channel Service Unit Module (Refurbished) Paging Horns / Speakers

Avaya 120A4 Channel Service Unit Module (Refurbished) Paging Horns / SpeakersKey Features: Mfr. Part #: 120A4 In combination with a DS1 circuit pack, it provides the essential functions of external CSUs Small size, easier to install than external CSU Does not require any option switch settings or DS1 cable Vintage 2 (120A4) provides enhancements to support the payload loopback function available when the ESF framing format is selected (requires 700A loopback jack) Condition: Refurbished Compatibility: The 120A4 CSU Module is

Your computer's "Processor" or "CPU" is the electronic circuitry inside the computer  that carries out the instructions of a computer program

Ringer volume control (off/low/high)

This card (NT7B75GA) is used to add 4 incoming lines to your Norstar Compact ICS or Modular ICS Cabinet

Part #: 6218

and G650 media gateways (G650 is preferred)

• Nortel Norstar systems• Nortel Meridian systems• Nortel BCM platforms

(8) DSX digital key telephone ports

Group Intercom

Requires AC adapter (700227242) or PoE

NEC IP1WW-DSPDB-B1 4-Port 4-hour Voicemail card 80044 / 80064

CO Lines (Analog FXO Trunks)

Accommodates Larger Capacity than Strata DK424i