ZyXEL IES1248-51V ADSL 2/2+ 48 Port Remote MSAN for ADSL and VoIP services

SKU: ZYIES124851V MFR: IES1248-51V

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Product Highlights

  • 10/100 Transfer Rate
  • Single-band
  • 48 Ports
  • 24 Mbps
  • Wired

About ZyXEL IES1248-51V

The ZyXEL IES-1248-51V can operate in the environment with temperature from -40deg.C to 65deg.C, which meets various Fiber-to-the-Node and Fiber-to-the-Curb environment conditions worldwide. A side-slip plug-in and pull-out mesh filter, which is cleanable and reusable, is equipped to make it dust-proof and suitable for open-air installations.

Moreover, the rotational speed of the fan module is automatically adjusted according to the system temperature. The feature not only extends the lifespan of the module, but also has lower audible noise, which is important if IES-1248-51V is installed in a residential neighborhood. The fan module is swappable in order to reduce the maintenance cost in the field.

The IES-1248-51V provides state-of-the-art ADSL2+ connectivity to subscribers. The latest technologies like various line coding, power spectral mask fitting, dual latency path selection, loop diagnostic and power management capabilities, Seamless Rate Adaptation (SRA) and Impulse Noise Protection (INP) are all supported. Up to 24Mbps (downstream) and 2.3Mbps (upstream) per port facilitates high-bandwidth services such as streaming video, online gaming and IP TV. ADSL2+ port bonding is also provided for subscribers who need even more bandwidth or located with loop length longer than 5000 ft.

The IES-1248-51V has a built-in POTS splitter and can act as the media gateway of a packet voice network. Through the communication with the softswitch or media gateway controller, IES-1248-51V digitalizes and encapsulates the POTS voice into VoIP packets and delivers them to the IP network with higher priority in SIP or H.248 signal protocols. Telco operators can provide voice over broadband (VoBB) service without changing existing customer premises network and keep the OAM&P as usual.

The IES-1248-51V comes with complete ATM and Ethernet QoS, as well as various IP QoS features (Packet classification/Rate Limitation/Queue Scheduling). The seamless QoS-mapping not only allows consistent and appropriate traffic treatment of packets, but also enables fulfillment of triple-play services.

ZyXEL IES1248-51V Features

  • ADSL2+ port bonding
  • SIP v2 and H.248 v2 media gateway signaling
  • Voice Codec of G.711 a/µ law, G.726, G.729 a/b and G.723.1
  • Fax/Modem signal pass through
  • Supplementary service support
  • Local Dial available
  • Loop Diagnostic
  • SELT (Single End Loop Test)
  • DELT (Dual End Loop Test)
  • MLT (Metallic Loop Test)
  • Test Out/Test in terminals

ZyXEL IES1248-51V Specifications

Network Interface
IEEE 802.3u 100BASE-Tx
IEEE 802.3ab 1000BASE-T
ADSL/ADSL2/ADSL2+ Interface 1
G.992.1 Annex A
G.992.3 Annex A, Annex L, Annex M
G.992.5 Annex A, Annex M
G.994.1 G.hs
G.992.3, G.992.5, G.997.1 Spectral Mask
G.992.3 and G. 992.5 ATM Transmission Convergence (ATM-TC) function
EOC defined in ITU-T G.992.3 and ITU-T G.997.1
ADSL/ADSL2/ADSL2+ Interface 2
Latency path function specified in ITU-T G.992.3 and G.992.5
Loop diagnostic function (SELT & DELT) specified in ITUT G.992.3 and G.992.5
Power management capability specified in ITU-T G.992.3 and G.992.5
Seamless Rate Adaptation (SRA) on-line configuration
Impulse Noise protection (INP) specified in ITU-T G.992.3 and G.992.5
ATM Functionality
8 VPC/VCC per DSL port
UBR, CBR, rt-VBR, nrt-VBR, ABR QoS Mechanisms
ATM Forum TM 4.0 peak cell rate traffic parameter
Downstream traffic shaping per ATM PVC
ATM F5 OAM cells for End-to-End Loop back test (ITU-T Rec. I.610)
G.998.1 multi-pair ATM bonding
Support 64k PVC
L2 Bridging
802.1d and 802.w RSTP
Max MAC address per system: 14K
Max MAC address per port: 128
Auto MAC address learning
Block duplicate MAC address (MAC address spoofing)
Configurable MAC aging-out time
Limiting number of MACs per port
Static MAC address filtering
User Isolation (per system)
VLAN & VLAN Bridge Functions
Provide 1024 configurable VLANs with 4K VLAN tagging
The VLAN tagging complies with IEEE 802.1Q
GVRP function
128 VLAN +MAC per DSL port
VLAN bridge function (multiple PVCs to one VLAN)
VLAN cross connect (PVC to VLAN one to one mapping)
VLAN trunking (single PVC join multiple VLAN)
IEEE 802.1ad provider bridge (Q-in-Q)
Configurable IEEE 802.1p priority queue function and support 4 levels
Configurable mapping function between ATM PVC and 802.1p priority queue
TOS/DSCP to IEEE 802.1p p-bit mapping in the network interface
Upstream rate limiting by ACL in the DSL port
Strict Priority queuing in the network interface
IP Functionality
RFC2684 bridged mode multicast service
RFC2684 routing mote support
ICMP function support
PPPoA forwarding
DHCP relay agent option 82 (circuit ID and Remote ID)
DHCP snooping
IEEE 802.1x
IPSec/L2TP/PPTP VPN pass-through function
RFC2516 PPPoE packet forwarding function
Packet Filtering
Discard downstream broadcast
Control downstream broadcast
Source MAC address filtering (pass or deny)
PPPoE filtering
Layer 3 filtering based on IP header: Src addresses, dest addresses, protocol ID, UDP / TCP port number
ARP broadcast Filtering
Downstream broadcast enable/disable ( per-VLAN, per-port)
NetBIOS filtering
DHCP broadcast filtering
IGMP filtering
Block BPDU/ARP/LACP/GMRP/upstream pause frame on DSL side
Multicast Capability
Internet Group Management Protocol (IGMP) version 2 specified in RFC2236
VLAN-aware IGMP snooping/IGMP proxy
Multicast VLAN support
512 multicast groups
50 copies for each multicast group
Number of zap per second per system: >30
Expedite leave: < 250 ms
Multicast bandwidth control
IGMP membership report
Static multicast forwarding
Multicast address filtering profile
Load protection for IGMP
VoIP Services
SIP v2 singling protocol and H.248 version 2
Voice CODEC: G.711 a/u, G.726, G.729 a/b G.723.1
Configurable jitter buffer
Generation of dial tone, second dial tone, ringing tone (ring-back tone), busy tone, off-hook warning tone
DTMF detection and generation (bi-directional): In-Band and Out-of-Band (RFC 2833), (SIP INFO)
FAX/Modem pass through (T.38) via RTP
call waiting, call hold, call transfer
Local dial
MLT (Metallic loop testing for subscriber lines)-GR909 and GR844
Local management through a craft terminal
In-band IP interface for managing the Network
SNMP (Simple Network Management Protocol) v1.0 & v2c (RFC1157)
The management activities can be performed by SNMP operations
Support SNMP MIB(s)
standard SNMP traps so that these traps can be reported to other NMSs
Centralized Management Software - NetAtlas Access supporting
MIB Support
Two TELCO-50 connectors for 48-port ADSL/ADSL2/ADSL2+
One mini RJ11 console port for local management
Two 100Base-TX/1000Base-T or two mini GBIC for uplink/subtending
One DB9 for 3 in and 1 out alarm contact
Hot-swappable fan module
DC Input connector
One power switch
Two RJ-45 ports for loop test out and test in functionality
DC power input (-36V DC - -72VDC)
Power consumption
Max. 170 Watts
Operating Temperature
-40deg. C - 65deg. C
Storage Temperature
-40deg. C - 70deg. C
Operating Humidity
10% - 95% (Non-condensing)
Storage Humidity
5% - 95% (Non-condensing)
Dimensions (W x D x H)
439.8 x 251 x 66 mm / 17.31 x 9.88 x 2.59"
8.2 Kg / 18.07 lbs
Mfr #
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