I have set the E&M for pass thru but am unable to achieve any thru-put. How do I configure the E&M for open 4-wire to pass plain audio?

E&M Pass-Through Setup
(This document assumes there is IP connectivity between the MultVOIP's and only mentions the parameters that must be changed to setup a 4 wire E&M Pass Through connection between channel 1 of two MultiVOIP's. Leave any parameters not mentioned at their default values.)



MultiVOIP A

Configuration ->Interface

Select Channel = Channel 1
Interface Type = E&M
Signal = Dial Tone
Type = Type II
Mode = 4 Wire
Enable Pass Through


Configuration ->Voice/Fax


Select Channel = Channel 1
Auto Call / OffHook Alert = Auto Call
Phone Number = 201:1


Outbound Phone Book


Destination Pattern = 201
IP Address = IP address of MultiVOIP B
Protocol Type = H.323


Inbound Phone Book


Remove Prefix = 101
Channel Number = Channel 1



MultiVOIP B


Configuration ->Interface

Select Channel = Channel 1
Interface Type = E&M
Signal = Dial Tone
Type = Type II
Mode = 4 Wire
Enable Pass Through

Configuration ->Voice/Fax


Select Channel = Channel 1
Auto Call / OffHook Alert = Auto Call
Phone Number = 101:1


Outbound Phone Book


Destination Pattern = 101
IP Address = IP address of MultiVOIP A
Protocol Type = H.323


Inbound Phone Book


Remove Prefix = 201
Channel Number = Channel 1