AudioCodes Mediant MSBR Series

MSBR Series 39 Mediant 500 MSBR
Hardware Installation Manual 5. Cabling the Device
5.2.4 SHDSL WAN Cabling
The device provides support for SHDSL interfaces. The SHDSL interfaces are provided by
two RJ-45 ports, where each physical port has four wire-pairs, supporting up to four SHDSL
WAN ports.
Warning:
• The device does not include primary telecom protection! When the DSL telephone
lines are routed outside the building, additional protection - usually a 350V three-
electrode Gas Discharge Tube (GDT) as described in ITU-T K.44 - must be provided
at the entry point of the telecom wires into the building (usually on the main
distribution frame / MDF), in conjunction with proper grounding. The center pin of the
GDT (MDF grounding bar) must be connected to the equipotential grounding bus bar
of the Telecommunication room.
• To protect against electrical shock and fire, use a minimum 26-AWG wire to the
connect DSL port to the network.
Note: SHDSL interface is a customer ordered item.
SHDSL port specifications:
 Conforms to ITU G.991.2 Annexes A, B, E, F and G SHDSL
 Up to 5,696 Kbps over a single wire pair
 Up to 22,784 Kbps over four wire pairs bonding, according to SHDSL.bis (ITU G.991.2
Annexes F, G)
 EFM and ATM support
 Wetting current support on the CPE side, according to G991.2
 Supports both Central Office (CO) and CPE (wetting current on CO - excluded)
 TC-PAM 16/32 line code