topic Re: NFAS w/DMS250 in IP Telephony and Phones

NFAS w/DMS250

mtashiro — Fri, 15 Mar 2019 01:51:02 GMT

I am trying to configure NFAS with DMS250 but it does not look like that switchtype is supported. Is there an alternate switchtype that is compatible or do I need to have carrier change?

Re: NFAS w/DMS250

Rob Huffman — Thu, 16 Nov 2006 18:07:23 GMT

Hi Mark,

According to the info I have read, DMS-250 is a supported switchtype. Have a look;

ISDN NFAS Prerequisites

NFAS is only supported with a channelized T1 controller and, as a result, must be ISDN PRI capable. Once the channelized T1controllers are configured for ISDN PRI, only the NFAS primary D channel must be configured; its configuration is distributed to all the members of the associated NFAS group. Any configuration changes made to the primary D channel will be propagated to all NFAS group members. The primary D channel interface is the only interface shown after the configuration is written to memory. The router must connect to either an AT&T 4ESS, Northern Telecom DMS-100 or DMS-250, or National ISDN switch type

ISDN Switch Types and Supported NFAS Types

Lucent 4ESS

Custom NFAS

Northern Telecom DMS-250

Custom NFAS

Northern Telecom DMS-100

Custom NFAS

Lucent 5ESS

Custom (Does not support NFAS)

Lucent 5ESS

NI NFAS

AGCS GTD5

NI NFAS

Other Switch Types

NI NFAS

From this doc;

http://www.cisco.com/en/US/products/sw/iosswrel/ps1831/products_configuration_guide_chapter09186a00800d9843.html#wp1001021

Hope this helps!

Rob

Please remember to rate helpful posts.....

Re: NFAS w/DMS250

mtashiro — Thu, 16 Nov 2006 20:45:54 GMT

I am trying to change the switchtype on the gateway. THis is all that is availabe:

MTWA-VGWY-TELCO(config)#int s0/0/0:23

MTWA-VGWY-TELCO(config-if)#isd

MTWA-VGWY-TELCO(config-if)#isdn sw

MTWA-VGWY-TELCO(config-if)#isdn switch-type ?

primary-4ess Lucent 4ESS switch type for the U.S.

primary-5ess Lucent 5ESS switch type for the U.S.

primary-dms100 Northern Telecom DMS-100 switch type for the U.S.

primary-net5 NET5 switch type for UK, Europe, Asia and Australia

primary-ni National ISDN Switch type for the U.S.

primary-ni2c The Cisco NAS-SC switchtype based on NI2C.

primary-ntt NTT switch type for Japan

primary-qsig QSIG switch type

DMS-250 is not an option. This is the same for the controller.

is there an option for DMS-250? Thanks!

Re: NFAS w/DMS250

Rob Huffman — Thu, 16 Nov 2006 21:01:47 GMT

Hmmmmmmmmm, that is odd. Did you try DMS100?

Rob

Re: NFAS w/DMS250

mtashiro — Fri, 17 Nov 2006 00:30:54 GMT

That is what i am going to do. Wondering if there will be any issues.