6-band DMT-Based Ethernet Over VDSL
High VDSL2 Speeds/Extended Cable Distanc e
Asymmetric/Symmetric 6-band Operation
Adaptive Rate/Fixed Rate Support
Built-in Splitter Per VDSL Port
Combo 1000BASE-T/SFP Gigabit Uplinks to Carriers' Backbones
Advanced Switch/Management Fun ctions

The DAS-3626 are 6-band high-speed VDSL2 switches that leverage the extraordinary
Cost Saving Solution for
bandwidth of VDSL2 technology, the next step in the delivery of new high -speed Internet
applications to home and office users. Designed for deployment in apartment buildings,
24 VDSL2 Ports
hospitals, factories and offices, these CO (central office) devices provide VDSL access to the
24 Built-in Splitter Ports
CPE (consumer premise equipment) such as the Bridge Remote Units (modems) from the
2 Combo 1000BASE-T/SFP
Gigabit Uplinks
subscribers. These switches connect to the service provider's public optical network (PON)
through their Gigabit Ethernet fiber interfaces. They provide the last mile connection by
extending the public high-bandwidth network to people living and working in multi-unit,
Local RS-232 Out-of-Band CLI
multi-tenant buildings, and are ideal for carriers offering concurrent high -speed Internet access,
Remote In-Band SNMP/Telnet
multimedia services and packet telephony services.
Multi-Level User Privilege System
SNMP v1, v2c, v3 Support
High-speed Internet Access. The DAS-3626 switches offer the 6-band VDSL technology for
Firmware Upgrade
telecom carriers to address the increasing service demands, delivering up much higher
Advanced Functions for
broadband speeds over a single copper pair. They support both symmetric and asymmetric
Broadband Service Offering
applications and cover various deployment scenarios in home and enterprise networks.
IGMP Snooping Groups, IGMP
Proxy/IGMP Fast Leave
24 VDSL Ports & 2 Gigabit Uplinks. The DAS-3626 switches provide 24 Ethernet over VDSL
Port-Based/Tag-Based VLANs
Traffic Segmentation to Isolate
(EoVDSL) ports respectively. Al three switches provide 2 combo 1000BASE-T Gigabit
Communication Between
ports/SFP slots for uplinks to the carrier's optical network.
VDSL Ports
MAC/IP-Based Access Control List
Spanning Tree for Redundant
Backup Bridge Paths
Automatic Connection and Continuous Telephone Service. Connection to the VDSL modems at
QoS: 802.1p Traffic Prioritization
the CPE side is automatic when you turn on the power of the DAS-3626 switches. Using the
Link Aggregation to Carrier's
original setting, there is no need for you to re -configure the system. The DAS-3626 switches are
Broadcast Storm Control
equipped with built-in splitter per VDSL port, dispensing system integrators of the need to instal
separate voice splitters for the phone lines. This facilitates carriers' offering of simultaneous
data/voice services (including telephone, fax and ISDN) on the same line for end-users.
Uninterrupted telephone service is guaranteed even when the switch's power is turned off, or in
an event of a power outage or a hardware failure.
Complete FTTH/FTTB Solution. The DAS-3626 VDSL2 switches are part of D-Link's total
solution for Fiber to the Home/Fiber to the Building that takes advantage of the
VDSL-over-Ethernet technology. This solution includes VDSL modems, multi -port VDSL routers
and multi-port VDSL switches.

Device Interfaces
DAS-3626 :
- 24 VDSL ports (1 RJ-21 connectors)
- 24 VDSL to PSTN splitters (1 RJ-21 connectors)
- 2 combo 10/100/1000BASE-T ports/SFP slots
- 1 RJ-45 10/100BASE-TX management port
- 1 RJ-45 Alarm port
- 1 RS-232 console port
-Provide loop diagnostic functions for VDSL2 lines
and can be done on demand on per VDSL2 line
- ITU-T Rec.G.993.2 Annex A and Annex K
- Back-to-back Fast Channel Mode latency:
basis and to report the test results by the CIT of the
- ITU-T Rec.G.993.2 Band plan
< 3 ms.
DAS-3626. To do this function for any
- ITU-T Rec.G.997.1
- Interleave Mode latency: < 10ms
- After completing the loop diagnostic function, the
- ITU-T Rec.G.994.1
- Latency path complies with ITU -T Rec. G.993.2
DAS-3626 support auto-return to the normal state
- Payload transfer delay of latency path:
ready for initialization and the test results can be
Band Plan
manual y configurable
For frequency bands from 12 MHz to 30 Mhz,
VDSL2 line doesn’t effect or interrupt any other
partitioning of frequency spectrum is
Transmission Power
working VDSL2 line traffic during and after the loop
downstream band (DS3) from 12 to 23 Mhz
14.5dB and support Transmission Power value
diagnostic procedure.
and upstream band (US3) from 23 to 30 MHz.
report by VDSL Line
Usage of US0 band complies with VDSL2
Profiles of ITU-T Rec. G.993.2
VDSL2 Profiles
Support downstream power back -off (DPBO) to
- 8b,8d, 12a, 12b, 17a and 30a profiles as specified
efficiently shape the VDSL2 downstream signal
VDSL Duplex Method
in ITU-T Rec. G.993.2
spectrum to mitigate far-end crosstalk (FEXT)
Frequency Division Duplexing, FDD
- DS1 frequency band of 30a profile starts at
caused by downstream transmissions on shorter
loops to longer loops in the same binder. The
VDSL 6-band Operation
- Edge frequency of upper band of 30a profile:
shaping mechanism complies ITU-T G.997.1 and
ITU-T G.993.2, including DS1, US1, DS2, US2,
30 MHz
can be enabled or disabled.
DS3, band from 25kHz to 30MHz
- Profiles programmable by command and
automatical y adapted according to line
VDSL Performance
VDSL Line-Code Scheme
condition on per VDSL2 line basis
- VDSL line supports transport of net data at
- Multi-carrier modulation
- Numbers of VDSL2 line profiles: 60
integer multiples of 32 Kbit/s from 32 Kbit/s
(discrete Multi-tone, DMT)
to MaxDS downstream and from 32 Kbit/s to
- Sub-carrier spacing complies with ITU -T Rec.
Spectral Mask
MaxUS upstream
- Transmitter signal compliant with Power
- MaxDS and MaxUS support 100 Mbit/s and 100
- Delta between frequency of -carrier granularity
Spectrum Density (PSD) mask in ITU -T
Mbit/s, respectively
4.3125 kHz +_ 5 0 p pm
- Downstream and upstream net data rates
- Downstream spectral mask #1, D-32 mask
programmable by command and automatical y
Rate Adaptive (RA) / Fixed Rate
adapted according to line condition on a per
- Capability for rate adaptation modes complies
- Maximum aggregation power of downstream
VDSL line basis
with ITU-T Rec. G.993.2 and G.997.1
signal transmitted by transceiver < or =
- Under each test loop, the initialization can be
- Rate adaptation modes: manual y configurable
maximum aggregation downstream transmit
completed and remain on a stable status within 90
power specified in specific VDSL2 profile as
seconds after turning on the power of the
- Rate adaptation mode configurable on per line
Defined in ITU-T Rec. G.993.2
DSL-6541K/DSL-6641K, and doesn’t exceed 3
basis for VDSL2 line
consecutive errors of initialization.
OAM Communication Channels
VDSL Requirements
Handshake Protocol
Transmitter support interactive management
Compliant with ITU-T G.993.1, G.993.1 Annex A,
functions between VTU-O and VTU-R using
Complies with ITU-T Rec. G.994.1
G.993.2 Annex A
embedded operations channel (EOC) and
indicator bits channel (IB) as defined in ITU -T
VDSL Ports
Rec. G.993.2
- Forward Error Correction, FEC support
Support PTM Transmission Convergence
- Support FEC value report by VDSL Line
(PTM-TC) function defined in ITU-T Rec.
Trel is Coding
G.993.2 Annex K
Trel is coding specified in ITU -T Rec. G.993.2
Loss of Signal (LOS)
Maintenance signal alarms including Loss of
Built-in Low Pass Filter/Splitter
INP Capability
Signal (LOS), Loss of Frame (LOF) and Link
- DC Resistance from Tip or Ring to Ground:
< 1.0 dB Up/Down generated and detected for each
- Impulse noise protection (INP) compliant with
= > 5 Mo hms
VDSL2 line
ITU-T Rec. G.993.2
- Insertion Loss caused by Loading LPF:
- Minimum impulse noise protection (INP_MIN):
< 1.0 dB
SNR Margin/SNR Margin per Band
- Attenuation Distortion: complies with ITU -T
- Minimum 2 DMT symbols protection, INP_MIN
-Support the function to observe the actual net data
G.992.3 Annex E.
Of 2
rate, the line attenuation/line attenuation per band,
- Return Loss: complies with ITU -T G.992.3
SNR margin/SNR margin per band, actual
Annex E.
Loop Diagnostics
interleaving delay, actual impulse noise protection,
the attainable net data rate, channel characteristics
-Support loop diagnostic standard in ITU -T G.993.2.
Upstream Power Back off (UPBO)
per subcarrier and quiet line noise PSD per
-The test parameters are including Channel
Enable/Disable UPBO function compliant with
subcarrier of each VDSL2 line.
Characteristics per subcarrier in a logarithmic scale,
-Support target noise margin, max. noise margin,
Quiet Line Noise per subcarrier, Signal -to-Noise
min. noise margin, max. interleaving delay, min. net
Ratio per subcarrier, Loop Attenuation per band,
data rate, max. net data rate and INP min for
Signal Attenuation per band, Signal-to-Noise Ratio
VDSL2 line interfaces and can be configurable.
Margin per band, Attainable Net Data Rate, and
-Support SNR margin status report by VDSL Line
far-end Actual Aggregate transmit power.

FE/GE Ports
Forwarding Mode
Limit Maximum Learned MAC Addresses
- Ful -wire speed (ful -duplex) operation on al
Store and Forward
Support the function to limit the maximum number
FE/GE ports
of dynamical y learned MAC addresses based on
- Forwarding rate for 10BASE-T up to 14,880
Switching Capacity
per VDSL2 line or per VLAN and al ow only packets
packets per second
DAS-3626 12.8Gbps
with dynamical y learned MAC addresses to pass
- Forwarding rate for 100BASE-TX up to 148,800
through a port in the DAS-3626. The range of
packets per second
64 Byte System Packet Forwarding Rate
limitation for each VDSL2 line can be configurable
- Forwarding rate for 1000BASE -T up to
9.5 mil ion packets per second
from 1 to 512 with step of 1.
1,488,000 packets per second
- Transmission range up to 100 meters over Cat -
Priority Queues
BPDU Control
5e/Cat-6 UTP cables
Discards BPDU packets per subsc riber interface.
- Connector type: RJ-45
8 Priority Queues per port
SFP/1000BASE-LX5 Module
MAC Address Table
-Support VDSL2 line units reset by CIT.
- IEEE 802.3z standard
16K MAC addresses
-Support factory default configuration, and loaded
- Supports ful -duplex, wire-speed packet
with default configuration when necessary.
forwarding with forwarding rate up to
Rate Control
1,488,000 packets per second over 5-Km-long
Supports rate control of Broadcast, Multicast
ITU-T G.652 single-mode fibers.
and unknown Unicast packets
Trunk Groups
- IEEE 802.3z standard
Supports 1 group (gigabit ports only)
- Supports ful -duplex, wire-speed packet
forwarding with forwarding rate up to
Loopback Test
1,488,000 packets per second over 15 -Km-
Support loopback test capability.
long ITU-T G.652 single-mode fibers.
- IEEE 802.3z standard
- Supports ful -duplex, wire-speed packet
forwarding with forwarding rate up to
1,488,000 packets per second over 40 -Kmlong
ITU-T G.652 single-mode fibers.
L2 Features
IGMP Filtering
802.1D spanning tree
IGMP snooping V1/v2
-Support number of IGMP filtering 60 profiles
- 802.1D STP compliance
-Support 2 modes for no joined multicast t raffic:
-Support multicast address range in each IGMP
- Support transparent bridging protocol
default flooding and default filtering
filtering profile 128 entries and can be configurable.
specified in IEEE 802.1D standard.
-Turning on/off IGMP snooping function does not
-Each VDSL2 port can be assigned with an IGMP
affect the normal operation of dedicated multicast
filtering profile, and can be configurable.
802.1s Multiple STP
- 802.1s RSTP compliance
-Support the function to limit the number of IGMP
- Spanning tree per VLAN
messages on per VDSL2 interface per second, and
-Support IGMP version 2 standard in RFC2236
support to configure value.
WRED congestion control
-Support 256 multicast groups which can be
-Support to limit the maximum number of concurrent
Weighted Random Early Detection
statical y al ocated and also work wel
multicast groups per VDSL2 port. The maximum
number can be configurable from 1 to 256 with step
Port mirroring
-Provide IGMP statistics, including:
of 1.
Support one-to-one or many-to-one port
-Per VDSL2 port, per dedicated multicast VLAN
counters: support IGMP join, IGMP leave, and
Multicast VLAN
current number of active multicast groups.
-Support 5 dedicated multicast VLANs, and can be
STP loopback prevention
-Per multicast group counters: suppor t current
number of active join ports.
-Within a dedicated multicast VLAN, specific
multicast traffic can be directed to multiple multicast
802.1Q VLAN
IGMP Proxy
clients from different VDSL2 lines that have joined
- Support IGMP Proxy function
the specific multicast groups, while each VDSL2
- Comply with IETF RFC-4541 or later versions
line stil belongs to:
VLAN Group
a port-based VLAN
-Support to configure VID from 1 -4094; total VLAN
IGMP Immediate Leave
- Support to turn on/off IGMP Immediate Leave.
-Support every VDSL2 line join up to 5 dedicated
-Support 4K static VLAN groups
- When IGMP Immediate Leave is turned on, the
multicast VLANs.
DAS-3626 support stop sending the multicast
-The multicast group address range can be
802.1Q Service VLAN (S-VLAN)
stream immediately when receiving an IGMP leave
configurable for each dedicated multicast VLAN.
-Can be turned on or off in each VDSL2 ports.
for the last member on this requesting interface
The number of multicast group address ranges for
When the function is enabled, the Ethernet type and
without sending one or more group specific queries
each dedicated multicast is up to 16 VLANs ,
IEEE 802.1p values of the S-VLAN can be modified.
and waiting for its timeout.
-Support to configure multicast IP address for
-Support S-VLAN tagging capability at the VDSL2
- When two or more multicast clients are served
multicast service.
concurrently through. a single subscriber interface,
-Support 24 copies for DAS-3626 with 24 VDSL2
turning on IGMP Immediate Leave function . shal
ports for each multicast group and work wel ,
Port Base VLAN
not affect channel switching and multicast video
Support configurable port-based VLAN.
playing for each client.
802.1w Rapid Spanning Tree
- 802.1w RSTP compliance

Protocol-based VLAN
Telnet Server
-Support packet classification according to the
RADIUS authentication for Management Access
Support at least 5 telnet sessions working wel
Ethernet type by per port
Support administrator authentication and
simultaneously and provide the auto-logout
-Support tagged with VLAN ID and IEEE 802.1p
authorization with a RADIUS/TACACS server via
Mechanism for the telnet sessions.
value, and can be assigned to priority queues.
The RADIUS/TACACS protocol
Support 8 classification entries per port and can be
TFTP client
TACACS+ authentication for Management
Support remote software upgrade via TFTP
Quality Of Service
Support administrator authentication and
802.1p support
authorization with a RADIUS/TACACS server via
Support RFC 2030 SNTP
- Comply with IEEE 802.1p standard
The RADIUS/TACACS protocol
- The scheduling mechanism support provide Strict
Priority (SP), WRR (weight round robin), and WFQ
SSH v2
-Support SNMP agent and configure SNMP
(weight fair queue) mode, and can be configurable.
-Support the SSH protocol standard in
read/write communities. If the SNMP agent function
draft-ietf-secsh-connect-16.txt or later version,
is disabled, the UDP port number of SNMP agent
Number of Queues per Port
which can create a secure connection between
function wil be closed.
The number of classification entries support 8
-The management activities can be performed by
entries in each port.
and a remote client. The SSH function support
SNMP operations.
enabled/disabled via configuration. If the SSH
CoS Based on Switch Port
function is disabled, the TCP port number of SSH
SNMP v2c
function should be closed.
-Support SNMP agent and configure SNMP
CoS Based on MAC Destination and Source
read/write communities. If the SNMP agent function
SSL v3
is disabled, the UDP port number of SNMP agent
function wil be closed.
CoS Based on TOS
Broadcast Storm Control
-Support SNMP traps and these traps can be
-Al ow specifying the threshold in terms of pkt/s for
reported to NMS.
-The management activities can be performed by
CoS Based on IP Destination and Source
per block
SNMP operations.
-Over threshold, just discard packet.
Min granularity: 1 pkt/s
-Support to limit the number of broadcast and
- Support Ipv4 only
unknown unicast packets entering the DAS-3626 to
- Specified in RFC 2475, and classify packets
prevent the broadcasting storm. The range of
Support 4 groups (Statistics, History, Alarms,
into different IEEE 802.1p queues according to
limitation for each port can be configurable from
DSCP values.
1,000 bps to the maximum port rate with granularity
no greater than 1,000 bps.
BootP/DHCP client
CoS Based on TCP/UDP port
Bandwidth Control
DHCP load system configuration file
ACL (Access Control List)
Per port granularity 64Kb/s
Support 2000 rules & 9 masks per device
Traffic Segmentation
Support RFC 3164 remote syslog using TFTP
Based on Switch Port
Management level
uploads to keep track of system events. The events
categorized into 3 levels according the severity of
Based on Ethernet type
Support administrator authentication and
authorization for al the administration control
the event to the customer services. The DAS-3626
connections. The authorization can support two
support filter the messages sent to the server
Based on MAC address
management levels of read-write and read-only.
according the levels.
Destination MAC address, source MAC address
The read-write management level al ows the
administrator to read, create, modify and delete
Trap/ Alarm/ Log Severity Control
Based on 802.1p priorit
data, and the read-only management level can
-Al ow to divide the severity of logs into 3 levels, and
IEEE 802.1p value.
al ow the administrator to read but not create,
configuration to trigger logging only for certain level
modify and delete data.
of logs
Based on VLAN
-Support trap mechanism and include trap of cold
CPU Protection
start, warm start, link down, and link up.
-Support fan and power alarm trap.
Based on DSCP
Protect CPU from Broadcast/Multicast/Unicast
flooding=> ARP storm (metering), HW default
route enable
Dual Image
Based on IP address
Support remote firmware upgrade function from
Destination IP address, source IP address
the NMS, and provide at least two complete boot
Single IP Management
Images and one configuration file.
Based on protocol type
Support SIM v1.5
CPU Monitoring
Based on TCP/UDP port
Web-based GUI
- Al ow monitoring the utilization of CPU via Web/
TCP/UDP port number
- Al ow to set the threshold and when CPU
Based on TCP/UDP payload [ packet content ]
utilization hit the threshold, device wil send out
Web MAC address Browsing
trap & log.
Apply one ACL rule to more than one -port in CLI
Show Config Command

DHCP relay + option 82
-The data of Performance parameter can be
RFC 2620 RADIUS Accounting Client MIB
Support DHCP Relay Agent Option 82 function
readable on demand via CIT and NMS.
standard in IETF RFC3046.
-Provide enough memory buffers to store event
-“Agent Circuit ID” sub-option: can be encoded the
counts for each performance parameter at least 7
VDSL2 line identification in the “Agent Circuit ID”
days and comply with RFC3728 .
sub-option (sub-option 1). The encoding can
-DAS-3626 can recognize a threshold crossing for a
-Downstream/upstream maximum net data rate and
uniquely identify the DAS-3626 and the VDSL2 line
given performance parameter including far-end and
minimum net data rate configurations read and
on the DAS-3626 on which the DHCP discovery
near-end Errored Second (ES), Severely Errored
message was received.
Second (SES), Unavailable Second (UAS) ,
-Downstream/upstream target noise margin,
- “Agent Remote ID” sub-option: Provide the option
far-end and near-end Code Violation (incorrect
maximum noise margin, minimum noise margin,
to use the “Agent Remote ID” sub -option
Cyclic Redundancy Check, CRC) of VDSL2 line and
INP_MIN, maximum interleaving delay and SNR
(sub-option 2) to further refine the VDSL2 line
CPU utilization ratio, packet buffer usage ratio,
margin configurations read and write,
identification. The Agent Remote ID contains an
memory usage ratio, a threshold report can be
-Downstream/upstream SNR per carrier, SNR
operator-configured string that uniquely identifies
generated and sent to the NMS. The threshold
margin per band, actual net data rate, VDSL2
the subscriber on the associated VDSL2 line on the
value can be configurable.
transmit and receive power, Attenuation per band,
DAS-3626 on which the DHCP discovery message
-Support ICMP function and can respond to the
actual interleaving delay, actual impulse noise
was received.
ICMP request message sent from NMS or other
protection, the attainable net data rate, channel
-Can be enabled/disabled , and the value within
characteristics per subcarrier and quiet line noise
Circuit ID and Remote ID sub­options can be
PSD per subcarrier of each VDSL2 line
configurations read,
-After system power restart at DAS-3626 due to the
-VDSL2 PM support include ES, SES, UAS, LOF,
Web UI supports non-IE browser
input power or equipment failure, the updated
records of the configuration parameters can be
Display the Tx/Rx traffic, Display source MAC
automatical y reloaded to DAS-3626.
Proprietary MIBs
-DAS-3626 support remote configuration functions
-ICMP Ping test, Packet Loss Rate and Round Trip
-Per VLAN basis for each network interface,
to configure password, Ethernet interface, 802.1p
Time inquiry. The number of ping times can be
-Per interface or per VLAN basis for each VDSL2
function, IGMP snooping and VLAN Assignment of
VDSL2 line,
DSL-6541K/ DSL-6641K fol owing IEEE 802.3ah .
-Running configuration writes and backup
-Per DSL-6541K/DSL-6641K and per IEEE 802.11g
-DAS-3626 support remote enable/disable functions
-TFTP/FTP uploads and down loads
wireless AP basis for each DSL-6541K/DSL-6641K.
to control IEEE 802.11g wireless AP interface,
-VDSL2 loopback test
PPPoE function, Network Address Translation
-DSL-6541K/DSL-6641K configurations read and
Performance Monitoring
(NAT) function, and Server and agent functions of
-DAS-3626 support performance monitoring and
DSL-6541K/ DSL-6641K fol owing IEEE 802.3ah.
-Configurations write of the maximum number of
performance data col ection functions.
MAC addresses per VDSL2 line, and read of
-Provide performance parameters for VDSL2 line
learned MAC addresses
are including far-end and near-end Errored Second
RFC 1493 Bridge MIB
-Number of broadcast/multicast/unknown unicast
(ES), Severely Errored Second (SES) and
Unavailable Second (UAS).
-IGMP snooping/immediate leave/filtering status
-Provide performance parameters for VDSL2 line
read and configurations write
are including the near-end Code Violation (incorrect
RFC 1643 Ethernet MIB
-Dedicated multicast VLAN configurations read and
Cyclic Redundancy Check, CRC).
-Provide performance parameters for combo GbE
-Combo GbE port status read
interface are including error packets, discarded
- ACL function configurations write
packets, unicast packets, and multicast packets.
RFC 2819 Four groups of RMON
-Protocol-based VLAN configurations write
-Provide performance parameters are including
-S-VLAN function configurations write
CPU utilization ratio, packet buffer usage ratio, and
- Traffic shaping or rate-limiting function
memory usage ratio.
configurations write
-Each event counts for each performance
- Port Mirroring function configurations write
parameter, support stored in the Network
-Community Table (including read community, write
-Current counters for 15-minute and 1-day, previous
RFC 2674 802.1p MIB
community) and TrapTable (including receiver IP,
counters for 15-minute and 1-day, and a certain
trap community) configurations read and write,
number of recent 15-minute counters can be
-Firmware version read
provided for each performance parameter of VDSL2
-Similar to IEEE 802.11 MIB.
line interface.
RFC 2233 MIB
-Provide SNMP mibs of al functions for device
network management
RFC 2618 RADIUS Authentication Client MIB
D-Link Private MIB
Power Input
Operating Temperature
- AC Input: 100 ~240 VAC, 60± 3 Hz Hz Internal
-0 ~ 65 C
Under 45Db
universal power supply
-DC Input: DC – 42 V ~ –56 V
Storage Temperature
- -40 ~ 70 C
DAS-3626 4 years
Power consumption
Power consumption of the VDSL2 interface is under
2 W per port.
10 ~ 90% non-condensing
490mm (W) X 290mm (D) X 66mm (H)
19-inch 1.5U Rack-mount size

EMI-EMC Compliance
Surge protection
Comply with Class A of Subpart B of Part 15 of the
Design to meet ANSI/TIA-968-A the AC power
FCC (Federal Communications Commission) r ules
supply lines of the DAS-3626 and DSL-6541K/
of U.S.A..
DSL-6641K to safeguard the units against the
damage due to transient and lightnin g surge voltage
Safety Compliance
presented on the telephone line and AC power
Design to meet CSA International
supply line. The test results can be temporary
degradation or loss of function or performance but
support self-recoverable and pass operational y
within 10 minutes.