[Asterisk-Users] Problems with wcte11xp module

[Kevin P. Fleming]

Ron Wellsted wrote:

> Did you set the E1/T1 jumper on the card correctly?  for UK/Europe it
> should be on the E1 position. In the T1 position it would only support
> 25 channels (24D+1B), EuroISDN provides 31 channels (30D+1B)

This is incorrect.

A T1 contains 24 channels; in CAS mode, that is channels 1-24 of voice.
In CCS mode (usually PRI), it is 23 channels of voice, with one data (D)
channel.

An E1 contains 32 channels; one of them is used for timing, and CCS is
nearly always used (EuroISDN PRI); that results in 30 channels of voice,
and one data (D) channel.