From: Brian Edwards (bedwards@xxxxxxxxxxx)
Date: Wed Aug 02 2000 - 18:10:26 GMT-3
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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