User manual

Raisecom Technology Co., Ltd
21
4.5. Basic Connection Type
The connection topologies introduced in this part is only for user reference. Users are
advised to design and deploy the most appropriate topology according to their specific
environment.
4.5.1. Point-to-point, ‘Master Clock – Slave Clock’ Topology
When connecting Routers or other V.35 interface equipment point to point, routers should
work in DTE mode. For the convenience of installation and test, it is advised to set the
local modem ‘Master Clock Mode’, and remote modem ‘Slave Clock Mode’. That is to say
the timing resource is from the local V.35 interface modem.
In “Master Clock-Slave Clock” topology, if DXC, MUX devices are in E1 link, the DXC,
MUX and remote modem should all be slave clock mode (follow the clock of E1 link)
RC801-60B-FV35 RC801-60B-FV35
Fiber
V.35
V.35
E1E1
PBX
Router
PBX
Router
4.5.2. Point-to-point ‘Terminal Clock – Slave Clock’ Topology
When the remote DTE device must follow the timing resource of local DTE device’s clock,
that is to say the TX CLOCK of local DTE is internal clock source, it is advised to set the
local V.35 interface modem ‘Terminal Clock Mode’, and remote V.35 interface modem
‘Slave Clock Mode’.
In “Terminal Clock-Slave Clock” topology, if DXC, MUX devices are in E1 link, the DXC,
MUX and remote V.35 interface modem should all be slave clock mode (follow the clock of
E1 link).
RC801-60B-FV35 RC801-60B-FV35
Fiber
V.35
V.35 X-Cable
E1E1
PBX PBX
Router
ATM or DDN