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New Contributor

ATLAS 800 with Cisco Router


I configured T1 on Cisco router connected to ATLAS 800  with the following configuration:

line code: b8zs

Clock source: Line

Framing: ESF

ISDN status on the router show the following:

ISDN Serial0/0/3:23 interface

        dsl 3, interface ISDN Switchtype = primary-4ess

    Layer 1 Status:


    Layer 2 Status:

        TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED

    Layer 3 Status:

        0 Active Layer 3 Call(s)

    Active dsl 3 CCBs = 0

    The Free Channel Mask:  0x807FFFFF

    Number of L2 Discards = 0, L2 Session ID = 213

    Total Allocated ISDN CCBs = 10

Layer 2 changing state from TEI_ASSIGNED to AWAITING_ESTABLISHMENT.

I'm looking for configuration need to be done on the Adtran.


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3 Replies
Not applicable

Re: ATLAS 800 with Cisco Router

The ATLAS needs to have the T1/PRI port configured for PRI under the DIAL PLAN.

You can look at this Cisco Academy Guide for details. The guide is for the ATLAS 550, but all the ATLAS products have the same configuration for the DIAL PLAN.

It looks like your PRI switch type is going to be "AT&T 4ESS.

Hope this helps,


New Contributor

Re: ATLAS 800  with Cisco Router


By typing AT&T 4ess you are referring to the Adtran side, right?


There is no AT&T 4ESS on Cisco router under the isdn switch-type:



PSTN_WKF_2(config)#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-dpnss   DPNSS switch type for Europe


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


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


  primary-ntt     NTT switch type for Japan


  primary-qsig    QSIG switch type


Not applicable

Re: ATLAS 800  with Cisco Router

Yes, I was referring to the ADTRAN ATLAS configuration, since your Cisco is set up "primary-4ess". The ATLAS switch types are:

Lucent 5E                              Lucent 5Ess switch type

Northern DMS100                 Nothern Telecom DMS-100 (sometimes called NI-1)

National ISDN                       National ISDN (also known as NI-2)

AT&T 4ESS                          AT&T 4ESS switch type

If you have any compatibility issues, it is more common to run the NATIONAL switch type.