Specifications

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Cisco 1751 Router Software Configuration Guide
OL-1070-01
Note After you change any voice-port command, we recommend that you cycle the port by
using the shutdown and no shutdown commands.
Configure E&M Voice Ports
Unlike FXS and FXO voice ports, the default E&M voice-port parameters are not sufficient to enable
voice and data transmission over your IP network. Because of the inherent complexities of PBX
networks, E&M voice-port values must match those specified by the particular PBX device to which it
is connected.
To configure E&M voice ports, use the following commands beginning in privileged EXEC mode:
Step 12
timing pulse-digit milliseconds (FXO ports only) If the
voice-port dial type is pulse,
configure the pulse digit
signal duration.
10 to 20 ms 20 ms
Step 13
timing pulse-inter-digit
milliseconds
(FXO ports only) If the
voice-port dial type is pulse,
configure the pulse inter-digit
signal duration.
100 to 1000 ms 500 ms
Command Task Valid Entries
Default
Values
Command
Required /
Optional Task
Step 1
configure terminal Required Enter the global configuration mode.
Step 2
voice-port slot-number/port Required Identify the voice port you want to configure,
and enter the voice port configuration mode.
Step 3
dial-type {dtmf | pulse} Required Select the appropriate dial type for
out-dialing.
Step 4
signal {wink-start | immediate |
delay-dial}
Required Select the appropriate signal type for this
interface.
Step 5
cptone {australia | brazil |
china | finland | france |
germany | japan |
northamerica |
unitedkingdom}
Required Select the appropriate voice call progress tone
for this interface.
Step 6
operation {2-wire | 4-wire} Required Select the appropriate cabling scheme for this
voice port.