From: Justin Menga (Justin.Menga@xxxxxxxxxxxxxxxxxx)
Date: Sat Feb 03 2001 - 09:49:20 GMT-3
Hi,
Since you're using VoFR I assume you are using a legacy PBX for your phones
- you will need either 20 analog ports or 20 digital lines from the PBX to
your router. If you are not using a PBX, then you'll need FSX ports instead
of those listed below.
If you are using analog lines, then you'll need 20 E&M or FXO ports. To
support this you are looking at a 3660 series router (6 slots) as a single
network module supports up to 4 analog ports (would need 5 x Network
Modules). NOT A GOOD IDEA TO USE ANALOG....
If you are using digital between the PBX and your router, you'll need an
E1/T1 type MultiFlex Trunk (MFT) network module. Since the router is
supporting PSTN connectivity as well, you'll need an E1/T1 HDV network
module (30/24 calls) - this means that you'll need at the minimum a 3640 (1
x Ethernet/WAN FlexiModule, 1 x MFT Module, 1 x HDV Module).
If you were using analog E&M (3660)as listed you have one spare slot (as
ethernet is onboard) for the HDV - however, you now lack a serial port for
your frame relay connection. You would need to either cut your lines down
to 16, or have a separate PSTN gateway (e.g. 2610 with HDV).
Of course, if you were using IP telephones, then you'd get away with just a
26xx (use spare slot for HDV), but I guess you're not doing that.
I have setup this stuff (VoIP with IP Telephones, CCM 3) with 3640s, 3660s,
and AS5300s - I found the 3660 platform was very unstable, with the AS5300
being the most stable (we were using ISDN PRI for PSTN connx, so this makes
sense). However AS5300 only supports VoIP. The 3640 was more stable, but
still lots of bugs around...
Regards,
Justin Menga CCIE #6640 MCSE+I CCSE
WAN Specialist
Computerland New Zealand
PO Box 3631, Auckland
DDI: (+64) 9 360 4864 Mobile: (+64) 25 349 599
mailto: justin.menga@computerland.co.nz
-----Original Message-----
From: Ola Aiyegbusi [mailto:ola@compath.com]
Sent: Saturday, February 03, 2001 4:38 AM
To: ccielab@groupstudy.com
Subject: VOFr solution
I am currently working on a VOFr solution. I need a router that can =
support the following:
20 Microsoft Windows hosts
20 VOFr calls
20 Off-Net calls
Ethernet LAN traffic
Frame Relay WAN traffic
Video
Any suggestions on which router to deploy? I would appreciate any =
information that you can give me. Thanks
Ola Aiyegbusi
Sr. Network Design Engineer CCDP, CCNP (Voice Access Specialization)
Sr. Network Engineering Instructor
"Focus and Motivation"
ComPath Inc.
10201 Lee Hwy Suite 140 Fairfax VA 22030
Phone: 703-383-9550 Ext. 122
Pager: 1-888-857-5620
Fax: 703-383-1369
Email: ola@compath.com
Web: http://www.compath.com
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:28:35 GMT-3