Cisco Cisco 1900 2900 3900 Series 8-Port Gigabit Ethernet HS-WIC with PoE

T1/E1 HWICs and 8-Port T1/E1 Network 
Module

12.4(11)XW5 
12.4(20)T

T1/E1 HWICs are available as follows:

Channelized 1-port T1/E1 HWIC

Channelized 2-port T1/E1 HWIC

Clear channel 4-port T1/E1 HWIC

The T1/E1 network module is available as an 8-port 
channelized T1/E1 network module.

T1/E1 HWICs are supported on Cisco 2811, Cisco 2821, 
Cisco 2851, Cisco 3800, Cisco 2900, and Cisco 3900 series 
routers.

The T1/E1 network module is supported on Cisco 3800, 
Cisco 2900, and on Cisco 3900 series routers.

The following sections provide information about this 
feature:

The following commands were introduced or modified: 

.

Voice Support on 1-Port and 2-Port HWICs

15.0(1)M3, 
15.1(1)T1, 
15.1(2)T

Introduces digital voice support (ds0-group and pri-group) 
on HWIC-1CE1T1-PRI and HWIC- 2CE1T1-PRI. 

This feature is introduced to the 1-Port and 2-Port HWIC on 
the following ISR-G2 platforms. Cisco 2911, Cisco 2921, 
Cisco 2951, Cisco 3925, Cisco 3925E, Cisco 3945, and 
Cisco 3945E.

Digital voice for 1-Port and 2-Port HWICS is only 
supported on motherboard (MB) HWIC slots.

The CUCM releases CUCM 7.1(5) and CUCM 8.0(2) are 
the minimum releases supported for voice on 
HWIC-1CE1T1-PRI and HWIC-2CE1T1-PRI. 
This release information only applies to MGCP 
configurations because H.323 and SIP configurations have 
no CUCM release dependency.

The following sections provide information about this 
feature: