STM1/E1 Access Multiplexer


  • Terminal multiplexer which delivers traditional PDH services over SDH networks
  • Supports a variety of management access over console, and SNMP
  • Supports Single E1 fractional and unframed E1 service; Multiple E1, fractional E1
  • Supports Internal clock and recovery clock modes
  • Provides two Gigabit Combo ports (2-port 10/100/1000Base-T and 2-port 1000Base-X SFP slot) with 16x E1 or 2x STM-1 fibre interfaces
  • Provides 2-port STM-1 fibre with 1+1 protection
  • Supports PCM31, FAS+CRC4, CRC self-test
  • Supports HDLC/GFP bridge operation, 16x VCG with total 16 remote device, 16E1 Per VCG, MAX 63E1 non-blocking matrix
  • Supports 16E1 balanced RJ45 or unbalanced BNC connectors
  • Maximum 220ms delay variance between E1 links
  • Supports 2x GbE Combo ports
  • Supports IEEE 802.1Q VLAN and QinQ, Link aggregation
  • Fibre port support ALS(Auto Laser Shutdown) function
  • Built-in BERT for performing local and remote loopback
  • Supports Console, GUI and SNMP management
  • Supports local and remote FTP/TFTP f/w upgrade
  • Support for LCAS according G.7042
  • Support according to G.7043 VCAT
  • Hot Standby mode for power supply
  • E1 ports faults statistics monitoring
  • Complies with ITU-T G.8040 standardSupports MTU 1522 bytes


Item Description
Ethernet Interface

Supports 2x GE combo ports
Auto Negotiation, AUTO-MIDX, 10M/100M/1000M,
Full/Half Duplex
Connector : RJ45
Supports 802.3x flow control

Optical Interface

1000FX, SFP
Connector : LC
Supports 802.3x flow control

E1 Interface

Up to 16x E1(ITU-T G.703)
Line Impedance : 75ΩBNC or 120ΩRJ45
Bit rate : 2048kbps±50ppm
Line code : HDB3

STM-1 Interface

Supports 2x STM-1 optical fibre port with SFP slot
Supports 1+1 optical fibre protection

Management port

One console port with RJ45 connector
One SNMP Ethernet port with RJ45 connector

LED Indicators



IEEE802.3 Ethernet, IEEE802.3u, IEEE802.3Z, IEEE802.3X, IEEE802.1Q, IEEE802.1ad, SNMPv1/v2c/v3, ITU-T G.703,  ITU-T G.704, ITU-T G.823


310 x 440 x 44mm (D x W x H)


AC: 90-265V, DC: -48V, Supports AC+AC, DC+DC, AC+DC

Power Consumption



Operating: -5 ~ 50°C
Humidity : ≤90% non-condensing

Ordering Information

Order Code Description
CT-ISAP1000-16E1B-AD 2x GbE Combo over 16E1 BNC, P to P, 1U 19" Rack, AC+DC power
CT-ISAP1000-16E1R-AD 2x GbE Combo over 16E1 RJ45, P to P, 1U 19" Rack, AC+DC power
CT-ISAP1000-GE/16E1B-AD 2x GbE Combo over 16E1 BNC, P to M, 1U 19" Rack, AC+DC power
CT-ISAP1000-GE/16E1R-AD 2x GbE Combo over 16E1 RJ45, P to M, 1U 19" Rack, AC+DC power
CT-ISAP1000-GE/STM1-AD 2x GbE Combo over STM1, P to M, 1U 19" Rack, AC+DC power
CT-ISAP1000-STM1B-AD 2x GbE Combo + 16E1 BNC over STM1, P to P, 1U 19" Rack, AC+DC power
CT-ISAP1000-STM1R-AD 2x GbE Combo + 16E1 RJ45 over STM1, P to P, 1U 19" Rack, AC+DC power

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