品牌/型号：ctc/ERM-MUX/PLUS,
,
CPU redundancy (1+1)
? E1 redundancy
(2+2)
? Power redundancy (1+1) [AC+AC, DC+DC,
AC+DC]
? DCE plug-in card types
* 6-channel o card
* 6-channel 2W/4W E&M card
* 6-channel FXS card
* 6-channel FXO card
* 6-channel RS-232 card (low speed)
* 5-channel X.50 card
* 4-channel G.703/64K-CO card
* 4-channel V.35 card (n*64K)
? Drop & Insert function
? NMP, SNMP and Web based management
? EMS system supported
? Compliance with ITU-G.703, G.704, G.706, G.732,
and G.823.
Specifications | Framing: | Unframed / Framed; CCS(PCM31) / CAS(PCM30); CRC4
On/Off | | Bit rate | 2.048Mbps±50 ppm | | Line code | AMI / HDB3 | | Line impedance | 75 ohm, unbalanced (BNC) | | 120 ohm, balanced (RJ-45) | | Relative receive leve | l 0 / -43dB | | Transmit level | | Pulse amplitude | Nominal 2.37V ±10% for 75ohm | | Nominal 3.00V ±10% for 120ohm | | Zero amplitude: ±0.1V | | Transmit frequency
tracking | Internal timing±30
ppm | | Loopback timing±50
ppm | | External timing±100
ppm | | Jitter
performance | ording to ITU-T
G.823 | | Complies with | ITU-T G.703, G.704, G.706 and
G.732. | | Interface connectors | BNC for unbalanced; RJ-45 Connector for
balanced |
|
? Bridge module - 2 channels ? 10BASE-T/100BASE-TX, Full Duplex or Half
Duplex ? 10BASE-T/100BASE-TX, Full Duplex or
Half Duplex ? IEEE 802.3x flow control ? Real-time filtering with 256 address tables ? Automatic address learning, aging and deletion
after 5 minutes ? Up to 340 packet-buffering
capacity ? Forwarding and filtering rate at
wire speed with through put latency of 1 frame. ? Auto padding of undersized packets to meet the
minimum packet size requirement ? Buffering modes can
be selected ording to the setting of WAN and LAN line speeds ? interface has automatic Twisted Pair polarity
correction |
LAN | Standard | Fully compliant with
IEEE 802.3/802.3u | | Connector | Shielded
RJ-45 | | Speeds | 10BASE-T/100BASE-TX, Full or Half
Duplex | | Frames | Supports 64 to 1522 byte packet lengths, standard
and extended length frames for VLAN tagging,
etc. |
|
? Each card provides two E1 loops, each loop
provides E1A/E1B channel
independently ? Hot-Swappable ? Each first E1 loop may provide external clock to
be used as system clock source | Framing | Framed CCS(PCM31) /
CAS(PCM30) | | CRC
check | CRC4 On/Off | | Bit rate | 2.048Mbps ±50 ppm | | Line code | AMI / HDB3 | | Line impedance | 75 ohm, unbalanced / 120 ohm,
balanced | | Relative
receive level | 0 / -43dB | | Transmit level | | | Pulse amplitude | Nominal 2.37V ±10% for 75ohm | | Nominal 3.00V ±10% for 120ohm | | Zero amplitude ±0.1V | | Jitter performance | ording to ITU-T G.823 | | Complies with | ITU-T G.703, G.704, G.706 and G.732 | | Interface connectors | BNC for unbalanced | | RJ-45 Connector for balanced | | Loopback type | Remote digital
loopback |
|
N x 64 Module, 4 channels, High Speed Data
Interfaces) | Interfaces types | RS-530, X.21, V.35, RS-449 and
RS-232 | | Interface
connector | HD68 Female with appropriate cable
adapter. | | Line
code | NRZ | | Data rate | N x 64kbps, where N equal 1 to 31 in CCS and N equal
1 to 30 in CAS |
|
Async Module, 6 channels, <= 38.4kbps Async or 6
channels, 64/128kbps Sync |
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