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Chapter 3 Configuration
Installation and Operation Manual
Table 3-1. VC-E1/16 Operating Modes
Card Designation
User-Side (Voice) Ports
Network-Side (Data) Ports
VC16E1_UE_NE, VC12E1_UE_NE
External ports (1-16E1 or 1-12E1)
External data ports (LINK 1, LINK 2)
VC16E1_UE_NS, VC12E1_UE_NS
External ports (1-16E1 or 1-12E1)
SDH ports
VC16E1_US_NE, VC12E1_US_NE
SDH ports
External data ports (LINK 1, LINK 2)
VC16E1_US_NS, VC12E1_US_NS
SDH ports
SDH ports
³
To specify the VC-E1/16 operating mode:
1. Move the selection block to the prescribed I/O slot. The slots supporting
VC-E1/16 modules are I/O-1 to I/O-5, I/O-7 and I/O-9 (a total of seven slots).
2. The modules that can be installed in the selected I/O slot are automatically
displayed in a list: select the number corresponding to the desired operating
mode, and confirm the selection.
Note
The maximum number of VC-E1/16 modules that can be installed in Gmux-2000 is
7. This maximum number can be installed only when no STM1 module is installed
in the chassis (this is always possible when using the UE_NE operating mode).
However, except for the UE_NE operating mode, all the other modes can use
ports located on STM1 modules. STM1 modules occupy slots I/O-7 and/or I/O-9.
Therefore, the maximum number of VC-E1/16 modules per chassis is 6 when one
STM1 module is installed, and 5 when two STM1 modules are installed.
3. Repeat the procedure for each additional VC-E1/16 module.
3.4
Configuring VC-E1/16 Global Parameters
VC-E1/16 global parameters configure processing characteristics that are used in
common by all the module voice ports. These characteristics control the
interpretation of the signaling information, and the management of the
bandwidth required on the link to the network.
Note
If you are not familiar with E1 frame structure, and in particular the utilization of
timeslots 0 and 16, which carry framing and signaling information, it is recommended
to review Appendix C of the Gmux-2000 Installation and Operation Manual.
Configuring Signaling Profiles
Voice calls require the transmission of control (signaling) information, such as call
setup and tear-down commands, call status, etc., for each channel.
An often-used method for call control is called channel-associated signaling
(CAS). CAS can be used when an E1 port uses G.704 framing with timeslot 16
multiframe (identified as Framed MF and Framed MF – CRC on supervision
terminal screens). In this framing mode, the 32 timeslots of each E1 frame are
used as follows:
3-4
Configuring VC-E1/16 Global Parameters
VC-E1/16, VC-E1/12 GM-2000 Ver. 3.2