E1/T1 TDMoIP modules provide conversion of E1/T1 traffic flows for transmission over the packet network via the Gmux-2000 GbE network module. The Gmux-2000 TDM pseudo-wire gateway for central offices comes in a 6U-high chassis, mountable in a 19" ETSI or ANSI rack. The Gmux-2000 TDM pseudo-wire gateway for central offices employs a double StarLAN backplane with the ability to interconnect two full Gigabit Ethernet trunks with any of the installed I/O modules. Two telecom buses interconnect between the I/O modules. |
Features:
- Enable Gmux-2000 to provide circuit emulation services by transporting E1 or T1 data streams over packet-switched networks
- Support up to 28 external E1 or T1 interfaces
- Up to seven modules per chassis for total support of up to 196 E1 or T1 ports
- Provide 112 E1 or T1 TDMoIP bundles (up to four bundles per port), which are forwarded to the packet-switched network via the Gmux-2000 GbE module
- Unframed, framed and framed with CAS operation modes
- Independent timing for each E1/T1 port
- Extended diagnostic mechanism, including self-test and loopbacks on the E1 and T1 ports
- Optional patch panel adapters with balanced and unbalanced interfaces
Description:
- The E1-CE/28 and T1-CE/28 modules enable Gmux-2000 to provide circuit emulation services for transporting E1 or T1 data streams over packet-switched networks (PSNs) using the TDMoIP protocol.
- The modules have 28 external E1 or T1 ports, supporting up to 112 independent E1 or T1 data streams.
- Each E1 or T1 stream is converted into a TDMoIP bundle, which is sent to the PSN GbE module. The Gmux-2000 GbE module forwards the bundle to its destination over packet-switched network.
- Each E1 or T1 port can be independently configured to handle the relevant payload in accordance with different framing modes and signaling formats:
- E1 – G732N/G732S, with or without CRC-4, or unframed
- T1 – D4 (SF) or ESF or unframed.
- Each E1 or T1 port operates using one of the following clocking modes:
- Loopback, recovered from received E1 or T1 stream
- Adaptive, recovered from the bundle payload
- System nodal clock.
- Comprehensive diagnostic capabilities include:
- Automatic self-test at power-up to monitor the module subsystems
- Local and remote loopbacks on the external E1 and T1 ports
- LED to indicate local/remote loss of frame synchronization for E1 or red/yellow alarm for T1.
- Optional patch panel adapters can be used to convert the external E1 and T1 ports terminated in two DB-62 connectors into 28 balanced (RJ-45) or unbalanced (BNC) ports for simplified user equipment connection.
Specifications:
|
TDMoIP PROCESSING |
|
Number of External TDM Ports |
28 |
|
Number of Bundles per Port |
Up to 4 |
|
Bundle Routing |
Any bundle to any destination |
|
T1 Interface |
|
Bit Rate |
1544 kbps |
|
Line Code and Zero Suppression |
AMI, B8ZS, B7ZS |
|
Framing Mode |
D4 (SF), ESF, unframed |
|
Line Interface |
100Ω, balanced |
|
Transmit Level |
DSU emulation: ±3V ±10%, user-selectable, measured at 0–655 ft
CSU mode: 0, -7.5, -15, -22.5 dB, user-selectable LBOs |
|
Receive Level |
0 through -12 dB (short-haul applications)
0 through -36 dB (long-haul applications) |
|
Standards Compliance |
AT&T TR-62411, AT&T Pub 54016, ANSI T1.107, ANSI T1.403 |
|
Connectors (per module) |
Two 62-pin D-type female, one for Tx, one for Rx |
|
General |
|
L 1–28 (red) |
Red alarm |
|
R 1–28 (red) |
Yellow alarm |
|
ACT (green) |
Module activity status |
|
FLT (red) |
Module fault detected |
|
Diagnostics |
Self-test at start-up
Local and remote loopback per external T1 port |
|
Physical |
Fits a single slot of the Gmux-2000 chassis (slots 1–5, 7, 9) |
|
Environmental |
|
Operating temperature: |
0–55°C (0–131°F) |
|
Storage temperature |
-20–50°C (0–150°F) |
|
Humidity |
Up to 90%, non-condensing | |