Problem with gateway voice in router 1841 or 1760

Reading Cisco documentation , I see that router 1841 and 1841 does not support as Voice Gateway.
My idea is to connect to him a Primary ISDN (30 channel B) so that it works like a PBX and users can make calls towards PSTN.
Is possible to do this with these routers (1841, 1760)?
Thanks.

Using T1, E1 or G.703 multiflex trunk interface cards with cisco 1760 or 1800 series are both available.
You can use these cards with 1760:
VWIC-1MFT-T1
One-port FJ-48 multiflex trunk - T1
VWIC-2MFT-T1
Two-port RJ-48 multiflex trunk - T1
VWIC-2MFT-T1-DI
Two-port RJ-48 multiflex trunk - T1 with drop and insert
VWIC-1MFT-E1
One-port RJ-48 multiflex trunk - E1
VWIC-2MFT-E1
Two-port RJ-48 multiflex trunk - E1
VWIC_2MFT-E1-DI
Two-port RJ-48 multiflex trunk - E1 with drop and insert
VWIC-1MFT-G.703
One-port RJ-48 multiflex trunk - E1 G.703
VWIC-2MFT-G.703
Two-port RJ-48 multiflex trunk - E1 G.703
You can use these cards with 1800 series:
VWIC-1MFT-T1
1-port RJ-48 multiflex trunk voice/WAN interface cardT1
VWIC-2MFT-T1
2-port RJ-48 multiflex trunk voice/WAN interface cardT1
VWIC-2MFT-T1-DI
2-port RJ-48 multiflex trunk voice/WAN interface cardT1 with drop and insert
VWIC-1MFT-E1
1-port RJ-48 multiflex trunk voice/WAN interface cardE1
VWIC-2MFT-E1
2-port RJ-48 multiflex trunk voice/WAN interface cardE1
VWIC-2MFT-E1-DI
2-port RJ-48 multiflex trunk voice/WAN interface cardE1 with drop and insert
VWIC-1MFT-G703
1-port RJ-48 multiflex trunk voice/WAN interface cardG.703
VWIC-2MFT-G703
2-port RJ-48 multiflex trunk voice/WAN interface cardG.703
you can get detailed information about compatibility with 1760 by using the below link:
http://www.cisco.com/en/US/products/hw/routers/ps221/products_data_sheet09186a00800920f2.html
you can get detailed information about compatibility with 1800 series by using the below link:
http://www.cisco.com/en/US/products/ps5853/prod_module_install_config_guide09186a00802c47ef.html

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Dear sirs
Thank you for answer so quickly
I download this document from Cisco âConfiguring the (Remote) Common Application Programming Interface for Cisco 800 Series Routerâ.
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http://new.photos.yahoo.com/nebula3012/album/576460762403680970
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nebula3012, Welcome to the discussion area!
1) What does "domain name" and "DHCP client id" in the AP Admin utility / internet tab?
If those items are needed, your ISP will provide them to you.
2) From what I remember of routers, they should have some place of configuring the peer to peer network name (workgroup) is that what they mean by "hostname" or "domain name"?
No
3) What does the "Enable default host" option mean in the AP config network tab?
It allows you to configure a device as a server. All of the ports of that device will be directly addressable from the internet.
5) How do I ensure there is no conflict between the AP and modem/router, and that they use the most efficient method for looking up DNS's?
You worry too much. There is nothing special to do.

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https://supportforums.cisco.com/discussion/11967296/cisco881v-c881-voice-bri-ports-remain-unregistered-cucm91
CUCM Add additional subunits to C887VA-V and C881VA-V SCCP gateway page
CSCul59124
-->
Description
Symptom:
Unable to add both the BRI and FXS ports on a C887VA-V SCCP voice gateway. When adding the FXS ports, the devicename is defined incorrectly, causing registration failure
Conditions:
CUCM 8.6.x, 9.x and 10.x
Cisco 887VA-V and 881VA-V voice gateway defined as SCCP controlled
Workaround:
Add the gateway under the 'Cisco 881/886/887' gateway entry. Add the FXS ports to 'Subunit 1'
Known Affected Releases:
(1)
9.1(2.12023.1
regds,
aman

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