Enabling E&M non-signaling mode
The E&M non-signaling mode is applied when the E&M interface of the peer device does not provide the M line and E line. In this mode, the E&M interface communicates with the peer end without signaling. You can configure the private line auto ring-down (PLAR) function by using the private-line command to form a three-segment E&M virtual private line (E&M-VoIP-E&M). When a subscriber picks up the phone, a number is automatically dialed out through the E&M virtual private line.
Configuration guidelines
This feature should be used with the PLAR function, and you must execute the private-line command on the calling voice gateway. For more information about the PLAR function, see "Configuring dial plans."
Before you enable E&M non-signaling mode, the E&M signaling must operates in the immediate start mode.
For more information about digital E&M non-signaling mode, see "Configuring digital voice subscriber lines."
Configuration procedure
To enable E&M non-signaling mode:
Step | Command | Remarks |
|---|---|---|
1. Enter system view. | system-view | N/A |
2. Enter voice subscriber line view. | subscriber-line line-number | N/A |
3. Enable E&M non-signaling mode. | open-trunk { caller monitor interval | called } | Optional. Disabled by default. |