User manual

Beijing Raisecom Science & Technology Co., Ltd. http://www.raisecom.com
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1. The series modems are deployed point to point, and in pairs.
2. There is no PCM equipment (i.e. DXC, MUX) that takes up the No. 0 timeslot in the link.
3. Neither of the equipment at both sides shall be set to transparent mode (N is not 0).
When all the conditions are met, user can set Master Control at one site, and Slave Control at the
other site. The first 5 bits switches can be set to all OFF. After the link is established, the actual
bandwidth at Slave Control site is the same as the Master Control site. Please note that neither of
the both sites can be set to transparent mode (N=0).
This bit switch has nothing to do with the timing resource. Users can either set Master Control at
the Master Clock site, or at the Slave Clock site.
If any of the three conditions cannot be met, then both modems shall be set to Master Control and
the first 5 bits will be used to configure the actual bandwidth. Please note that when N=0, the
equipment is working at transparent mode and this bit switch is invalid.
3.2.3 The 7
th
and 8
th
Bits: Timing Resource Option
7
th
bit 8
th
bit Timing Resource Option
OFF OFF Master Clock (Internal)
OFF ON V.35 Terminal Clock
ON OFF Vacant
ON ON Slave Clock (follow the link clock)
Users are advised to select the most suitable timing resource according to the connection types in
Chapter 2. When configuring the timing resource, V.35 DTE interface on Routers shall also be
configured. Both TX and RX clock shall be External Clock mode at V.35 interface that connected
with Master/Slave Clock equipment. The TX Clock shall be Internal Clock mode and RX Clock
shall be External Clock mode at the V.35 interface that connected with Terminal Clock equipment.
3.2.4 The Factory Default Setup of SW1: All OFF
Switch 1
st
bit 2
nd
bit 3
rd
bit 4
th
bit 5
th
bit 6
th
bit 7
th
bit 8
th
bit
Default OFF OFF OFF OFF OFF OFF OFF OFF
Details N=31，V.35 bandwidth 1984K
Bandwidth
Master
Control
Master Clock
Mode