From: Brian Edwards (bedwards@xxxxxxxxxxx)
Date: Wed Aug 02 2000 - 19:56:47 GMT-3
Ken,
Thanks for the link. Here is some text out of it...
===============
Before you begin to configure this feature, ensure that the selected access
server is in the following condition:
- The T1 or E1 controllers are operational and configured for ISDN PRI.
- The D-channel interfaces are operational and configured for ISDN PRI.
- Each D-channel interface is configured with the isdn incoming-voice modem
command.
For example, the selected PRI interfaces might have a configuration similar
to the following:
interface Serial1/0/0:23
no ip address
no ip directed-broadcast
isdn switch-type primary-ni
isdn protocol-emulate network
isdn incoming-voice modem
no cdp enable
===============
I think this is assuming you want to use this feature to connect to a PBX
(real world). When using this for back-to-back DDR practice for the CCIE lab
"isdn incoming-voice modem" isn't needed, correct?
Thanks,
Brian
P.S. Does anyone have two 2600's with PRI interfaces to try this out on?
P.P.S Ken, would it be possible for Cisco implement this feature on a 2500
BRI interface in a future IOS release? Don't worry about conflict of
interest; Juniper is not planning on implementing ISDN any time soon.
-----Original Message-----
From: Kenneth Sacca [mailto:ksacca@cisco.com]
Sent: Wednesday, August 02, 2000 2:36 PM
To: Brian Edwards
Cc: Mark Lewis; ccielab@groupstudy.com
Subject: Re: back-to-back BRI
Ok. Try this link. It spells out exactly how to do this. Brian's link
is only for marketing. This link is how to configure this.
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121
t/121t3/dtpri_ni.htm
Good luck.
Ken
Brian Edwards wrote:
>
> Here is what I've found. PRI only, IOS 12.1(3)T
>
http://www.cisco.com/warp/public/cc/pd/iosw/iore/iomjre121/prodlit/1065_pp.h
> tm#23001
> Network Side PRI Signaling, Trunking, and Switching
>
> Description
>
> The Network side PRI Signaling, Trunking, and Switching feature enables
> Cisco IOS Software to replicate the public switched network interface to a
> PBX. Network
> Side PRI enables the NAS to provide a standard ISDN PRI network-side
> interface to the PBXs and mimic the behavior of legacy phone switches. To
a
> PBX, the NAS
> functions as a National ISDN PRI switch type or an ETSI PRI Net5 switch.
No
> change in PBX capability or behavior is required.
>
> Call switching using dial peers enables Cisco (voice-over-IP) VoIP
gateways
> to switch voice and data calls between different interfaces based on the
> dial peer matching.
> An incoming call is matched against configured dial peers, and based on
the
> configured called number, the outgoing interface is selected. Any call
that
> arrives from an
> ISDN PRI network side on a supported platform is either terminated on the
> NAS, switched to an IP network, or switched to the PSTN, depending on the
> configuration. A dial peer is an addressable call endpoint identified, for
> example, by a phone number or a port number. In VoIP, there are two kinds
of
> dial peers: POTS
> and VoIP. The Cisco AS5800 access server switches both voice and data
calls.
> The Cisco AS5300 access server switches only voice calls.
>
> The Trunk Group Resource Manager (TGRM) supports the logical grouping,
> configuration, and joint management of one or more PRI interfaces. The
TGRM
> is used to
> store configuration information and to accept or select an interface from
a
> trunk group when requested. A trunk group is provisioned as the target of
a
> dial peer, and the
> TGRM transparently selects the specific PRI interface and channels to use
> for incoming or outgoing calls. A trunk group can include any number of
PRI
> interfaces, but all
> the interfaces in a trunk group must use the same type of signaling.
>
> The Class of Restrictions (COR) functionality provides the ability to deny
> certain call attempts based on the incoming and outgoing class of
> restrictions provisioned on
> the dial peers. This functionality provides flexibility in network design,
> allows users to block calls (for example, to 900 numbers), and applies
> different restrictions to call
> attempts from different originators. COR is used to specify which incoming
> dial peer can use which outgoing dial peer to make a call.
>
> In Cisco IOS Software Release 12.1(2)XH, the trunking and COR parts of
this
> feature are available only on the Cisco AS5800. The remainder of the
feature
> is
> platform independent.
>
> Benefits
>
> The Network Side PRI Signaling, Switching, and Trunking feature
allows
> you to bypass PSTN tariffed services such as trunking and administration,
> extending the
> cost savings of VoIP.
>
> It allows your PBXs to be connected directly to a Cisco NAS, so PBX
> station calls can be routed automatically to the IP network without the
need
> for special IP
> telephones.
>
> It provides flexibility in network design.
>
> It also enables you to block calls selectively based on the called
> number or the calling number.
>
> Platforms/Considerations
>
> Routers
> C2600, C36xx, C4x00, C7x00,
> Access Servers (AS)
> 5300, 5800
>
> First appearance in a Cisco IOS Software Release: 12.1(3)T.
>
> Marketing Contact
>
> Anita Freeman
>
> anfreema@cisco.com
> ---------------------------------------
> Brian Edwards
> Juniper Networks, Inc.
> JTAC / Technical Support Engineer
> Ph: 408-745-2152
> ---------------------------------------
>
> -----Original Message-----
> From: Kenneth Sacca [mailto:ksacca@cisco.com]
> Sent: Wednesday, August 02, 2000 12:25 PM
> To: Mark Lewis
> Cc: ccielab@groupstudy.com
> Subject: Re: back-to-back BRI
>
> A colleague provided me these instructions. I haven't tried
> it yet. I think you need at least a 12.0 IOS version but I
> don't know which IOS you will need.
>
> HTH Ken
>
> Are you trying to set up a back-to-back connection using ISDN ? If
> that's the case, on the peer serial0:23 interace, you need to issue the
> command ISDN network. This simulates the network (switch) side of the
> ISDN connection.
>
> You can verify that by doing 'show isdn status' and it should say
> '**network side configuration'. Be careful with clock sources tho.
> Generally I make the side which is acting as the network use the
> internal clock. This can be done by doing 'clock source internal' on the
> t1 controller.
>
> Mark Lewis wrote:
> >
> > Sorry, not possible! I wish it was!
> >
> > >From: "Ola Aiyegbusi" <ola@compath.com>
> > >Reply-To: "Ola Aiyegbusi" <ola@compath.com>
> > >To: <ccielab@groupstudy.com>, <cisco-cert@cciecert.com>
> > >Subject: back-to-back BRI
> > >Date: Wed, 2 Aug 2000 12:43:06 -0400
> > >
> > >Can you connect two BRI or PRI interfaces back to back to simulate ISDN
> or
> > >connect BRI to PRI directly? I don't have an ISDN simulator but have
BRI
> > >and PRI interfaces on my routers
> > >
> > >Ola Aiyegbusi
> > >Network Engineer CCDP, CCNP (Voice Access Specialization)
> > >ComPath Inc.
> > >10201 Lee Hwy Suite 140 Fairfax VA 22030
> > >Phone: 703-383-9550 Ext. 122
> > >Pager: 1-888-857-5620
> > >Cell: 703-395-8808
> > >Fax: 703-383-1369
> > >Email: ola@compath.com
> > >Web: http://www.compath.com
> >
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