TN420C - TN744E

TN420C - TN744E
Avaya Definity TN429D DIOD

TN429D DIOD The TN429D DOID (Direct inward/outward dialing) provides up to 8 ports. Each port provides a 2-wire interface to the central office(CO) public exchange...

TN429D DIOD The TN429D DOID (Direct inward/outward dialing) provides up to 8 ports. Each port pro...

In Stock
$399.98
TN420C - TN744E
Avaya Definity TN553 Packet Data Line

TN553 Packet Data Line Provides software-administrable connections between the Switch Processing Elements (SPE) and system access ports. Converts mode-2 protocol to mode-3 protocol connecting the...

TN553 Packet Data Line Provides software-administrable connections between the Switch Processing ...

In Stock
TN420C - TN744E
Avaya Definity TN556B ISDN BRI 4-Wire Interface

TN556B ISDN BRI 4-WIre Interface Provides 12-ports connecting to ISDN-BRI terminals. Each port uses TXT, TXR, PXT, PXR signal leads and ranges up to 3300...

TN556B ISDN BRI 4-WIre Interface Provides 12-ports connecting to ISDN-BRI terminals. Each port us...

In Stock
TN420C - TN744E
Avaya Definity TN570B Expansion Interface

TN570B Expansion Interface This card will provide an interface with the TDM bus and pack bus between the two. Fiber optic links interconnecting cabinets used...

TN570B Expansion Interface This card will provide an interface with the TDM bus and pack bus betw...

In Stock
TN420C - TN744E
Avaya Definity TN570C Expansion Interface

TN570C Expansion Interface This card will provide an interface with the TDM bus and pack bus between the two. Fiber optic links interconnecting cabinets used...

TN570C Expansion Interface This card will provide an interface with the TDM bus and pack bus betw...

In Stock
$149.00
TN420C - TN744E
Avaya Definity TN572 Switch-Node Clock

TN572 Switch-Node Clock This card distributes the timing signals that synchronize the SN carrier. It also receives maintenance data. Features Timing signals that synchronize the...

TN572 Switch-Node Clock This card distributes the timing signals that synchronize the SN carrier....

In Stock
$169.00
TN420C - TN744E
Avaya Definity TN573B Switch-Node Interface

TN573B Switch-Node Interface This card routes circuit packet and control messages. TN573B and higher provides an interface to the single-mode fiber optic transceiver and supports...

TN573B Switch-Node Interface This card routes circuit packet and control messages. TN573B and hig...

In Stock
$199.00
TN420C - TN744E
Avaya Definity TN722B DS1 Tie Trunk

TN722B DS1 Tie Trunk The TN722B connects the 8 ports of multi-appearance hybrid analog and 24 independent trunk connections of digital voice terminals. Features 8...

TN722B DS1 Tie Trunk The TN722B connects the 8 ports of multi-appearance hybrid analog and 24 ind...

In Stock
TN420C - TN744E
Avaya Definity TN726B Data Line (8-Ports)

TN726B Data Line (8-Ports) The TN726B provides 8 serial asynchronous EIA ports with modem interfaces connected through ADUs to EAI ports on DTE. Features Ports:...

TN726B Data Line (8-Ports) The TN726B provides 8 serial asynchronous EIA ports with modem interfa...

In Stock
$244.00
TN420C - TN744E
Avaya Definity TN735 MET Line (4 ports)

TN735 MET Line (4 ports) Provides 4 ports that can connect multi-button electronic telephone sets. Each port has a tip and ring and BT, BR,...

TN735 MET Line (4 ports) Provides 4 ports that can connect multi-button electronic telephone sets...

In Stock
$199.00
TN420C - TN744E
Avaya Definity TN742 8-Port Analog Line Circuit Pack

TN742 8-Port Analog Line Circuit Pack The TN742 is a 8-port analog interface in which each port supports one voice terminal with or without message...

TN742 8-Port Analog Line Circuit Pack The TN742 is a 8-port analog interface in which each port s...

In Stock
TN420C - TN744E
Avaya TN744 Call Classifier (TN744C, TN744D, TN744E)

Avaya Definity TN744 Call Classifier (TN744C, TN744D, TN744E) The TN744 provides 8 ports for tone detection on the TDM (Time Division Multiplexing) bus that will...

Avaya Definity TN744 Call Classifier (TN744C, TN744D, TN744E) The TN744 provides 8 ports for tone...

In Stock