
Configuring Line Services
A-58 114078 Rev. A
Parameter: Internal Clock Speed
Path: COM Connector > Edit Line > Edit Sync Parameters
Default: 64 KB (19200 KB for SDLC)
Options: 1200 B
| 2400 B | 4800 B | 7200 B | 9600 B | 19200 B | 32000 B |
38400 B | 56 KB | 64 KB | 125 KB | 230 KB | 420 KB | 625 KB | 833 KB | 1.25
MB
| 2.5 MB | 5 MB
Function: Sets the clock speed of an internally supplied clock when the Clock Source
parameter is set to Internal. Attached devices must be capable of operating at
the specified speed.
Instructions: Set the clock speed for the internal clock to the desired data transmission rate
across the synchronous line.
Some of the more common allowed speeds for IBM products are as follows:
• An IBM 3274 with an V.24/RS-232 interface supports up to 9600 bps. Some
support speeds up to 19200 bps.
• An IBM 3274 with a V.35 interface supports up to 64 Kb/s.
• An IBM 3174 with a V.24/RS-232 interface supports up to 19200 bps.
• An IBM 3174 with a V.35 interface and running Licensed Internal Code-C
supports up to 256 Kb/s
You cannot set this parameter when the Clock Source parameter is set to
External.
MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1.14
Parameter: Signal Mode
Path: COM Connector > Edit Line > Edit Sync Parameters
Default: Balanced
Options: Balanced
| Unbalanced
Function: Specifies balanced or unbalanced transmission. Balanced transmission uses two
conductors to carry signals; unbalanced uses one conductor to carry a signal,
with a ground providing the return path.
Instructions: Set this parameter to either Balanced or Unbalanced, depending on the signaling
mode of the connected device.
MIB Object ID: 1.3.6.1.4.1.18.3.4.5.1.15
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