Specifications

Circuit packs, channel service units, and power supplies
252 Hardware Description and Reference for Avaya Communication Manager
TN2207 DS1 interface, T1 (24 channels) and E1 (32
channels)
Note:
Note: This circuit pack is not used in a G650 Media Gateway.
The TN2207 circuit pack supports digital signal level 1 (DS1) rate (24-channel) and E1 rate
(32-channel) digital facility connectivity. All TN2207 suffixes support CO, Tie, DID, and
off-premises station (OPS) port types that use the following protocols:
● Robbed-bit signaling
● Proprietary bit-oriented signaling (BOS) 24th-channel signaling
● DMI-BOS 24th-channel signaling
The circuit packs also support ISDN-PRI connectivity T1 or E1.
In a 24-channel DS1 mode, a DS1 interface is provided to the DS1 facility. The TN2207 circuit
packs provide circuit-pack-level administrable A- and Mu-Law companding, CRC-4 generation
and checking for E1 only, and stratum-3 clock capability.
The TN2207 provides test jack access to the DS1 or E1 line and supports the 120A integrated
channel-service unit (CSU).
All suffixes have line-out (LO) and line-in (LI) signal leads. The line-out and line-in leads are
unpolarized balanced pairs.
The TN2207 has additional hardware to support direct cables to a TN787 MMI circuit pack.
TN2209 tie trunk (4-wire, 4 ports)
The TN2209 tie trunk was designed for use in Russia.
The TN2209 tie trunk has four ports used for Type 1 or Type 5 4-wire E&M lead signaling tie
trunks. The tie trunks can one of four types: automatic, immediate-start, wink-start, and
delay-dial. The TN2209 provides an interface between these four frequency signaling tie trunk
lines and the switch TDM network. Based on a TN760D each port has modified E&M signal
leads for universal hardware compatibility. The TN2209 provides release link trunks that are
required for the Centralized Attendant Service (CAS) feature and has administrable A- and
Mu-Law companding.