The line side T1 card is a station card. It emulates a 500TN in the Meridian 1 (an analog station port). As far as the M1 is concerned, all the channels off this card are analog telephones. This being so, you need to program signaling in Asterisk to treat this as a Central Office. Due to the strange way Asterisk signaling is configured, you will therefore have to program the Asterisk end of things to use FXS signaling.

NT5D14 Jumpers.

Switch 1
1	Serial Port Speed	On = 1200 bps Off = 2400 bps
2	Signalling	On = Groundstart Off = Loopstart
3-6	XPEC Card Address	See XPEC Table
7	Ununsed	Off
8	SL-100 Use Only	Off
Switch 2
1	Framing	On = D4 Off = ESF
2	Coding	On = AMI Off = B8ZS
3-5	Line Build-Out	See LBO Table
6	Line State on T1 Fail	On = Onhook Off = Offhook
7	Daisy-Chain Serial Link	On = Yes Off = No
8	Serial Link Master or Slave	On = Master Off = Slave	*Only if Daisy Chained

XPEC Card Address
Address	3	4	5	6
00	Off	Off	Off	Off
01	Off	Off	Off	On
02	Off	Off	On	Off
03	Off	Off	On	On
04	Off	On	Off	Off
05	Off	On	Off	On
06	Off	On	On	Off
07	Off	On	On	On
08	On	Off	Off	Off
09	On	Off	Off	On
10	On	Off	On	Off
11	On	Off	On	On
12	On	On	Off	Off
13	On	On	Off	On
14	On	On	On	Off
15	On	On	On	On

LBO	Distance In Feet to CPE or CSU
Distance	3	4	5
0-133	On	Off	Off
134-266	Off	On	On
267-399	Off	On	Off
400-533	Off	Off	On
534-655	Off	Off	Off

So, now that you have this card in your switch, what can you do with it?

Each of the 24 T1 channels on this card can be programmed as a 500(analog) set. They can be added to ACD queues to enable IVR, or remote agent funtionality. You can run comedian mail with unlimited storage instead of mermail with its crippled storage.