We are currently at the cusp of VoIP communications within the organization. I had submitted a question in regards to linking to older (much older) analog pbx systems and the solutions given via GRBlades and TVman OD and they worked. We were able to tie two older PBx's via 2 2821's and 2 VWIC-1MFT's and some ios help. The powers that be want to go full on with this scenario but my suggestion is a complete overhaul of said network/phone equipment. I have written a business proposal and also sent out RFP's to reseller agencies and am pretty much sold on the cisco product and the leasing options they have. We have isolated a need and now would like to reap a saving (obviously over time) because we are a non-for-profit. I have a few questions before we pursue.
I know there is a great deal involved in said planning. I have a count of all handsets, roster of employees and all fax/dialup lines also accounted for. We have the following infrastructure but will upgrading said mpls infrastructure to improve and allow said VoIP traffic to travers along with out data traffic.
Site 5
/ \
/ \
/ \
/ 3.0MbpsBackupADSL(VPN)
/ \
1.54Mbps-MPLS /
\ / Site 3
\ / | \
\ / | \
\ / | /
\ / 1.54Mbps-MPLS 3.0MbpsBackupADSL(VPN)
\ |__________ | /
|____________\ | /
\\|/
Firewall----Site 1------3.0Mbps-MPLS-------
--Site 2
/ /|\\\ /
/ / | \\\_3.0MbpsBackupADSL(VPN)
_/
===ISP Wan Router / | \\_______________________
/ | \___________________ \
1.54Mbps-MPLS 3.0Mbps-BackupADSL(VPN) / \
/ | / \
\ | / \
Site 4 1.54Mbps-MPLS 3.0MbpsBackupADSL(VPN)
\ /
\ /
\ /
Site 6
We will be upgrading site 1 to cater to 6 1.54mpbs links equating to 9mbps via a 2821 series (max ram/flash, ent ios for VoIP) and support the 6 links via 3 VWIC-2MFT-T1=. Each of the two links on each card supporting one of the multi-link interface links via the following:
(Thanks LRMoore)
!
controller t1 0/1/0
channel-group 0 timeslots 1-24
controller t1 0/1/1
channel-group 0 timeslots 1-24
!
interface serial 0/1/0:0
encap ppp
ppp multilink
ppp multilink group 1
!
interface serial 0/1/1:0
encap ppp
ppp multilink
ppp multilink group 1
!
controller t1 0/2/0
channel-group 0 timeslots 1-24
controller t1 0/2/1
channel-group 0 timeslots 1-24
!
interface serial 0/2/0:0
encap ppp
ppp multilink
ppp multilink group 1
!
interface serial 0/2/1:0
encap ppp
ppp multilink
ppp multilink group 1
!
controller t1 0/3/0
channel-group 0 timeslots 1-24
controller t1 0/3/1
channel-group 0 timeslots 1-24
!
interface serial 0/3/0:0
encap ppp
ppp multilink
ppp multilink group 1
!
interface serial 0/3/1:0
encap ppp
ppp multilink
ppp multilink group 1
!
We will also be upgrading the outer sites (Site 3-6, Site 2 was already upgraded to a two link 3.0 mbps mutli-link interface) to 3.0mbps multi-link interfaces.
Third Question - is regarding network infrastructure. Within the current network we are currently utilizing no managed switches and have no POE hardware; i know that this project will not move forward without said port powered switch backplane. I've quoted out the following switch hardware for said project; 9 Cisco Catalyst 3560 Switch - 48 Port, 10/100, PoE, 4 SFP Ports, IP Base Image. We can not afford to drop an RJ45 link for every phone on it's own so we will be utilizing our current cabling (the cabling is fairly new, about three years, and all certified for 1gb link which should certify for poe as well), link the phones to the switch and the workstations to the phones in ost cases. For those areas that do not have a workstation drop we will have to eat the cost of laying out another cable. In anyone's experience is this a recommemnded solution? Will the phones interrupt application traffic and/or slow down the current network substantially? We're using "dumb" un-managed switches currently. We will also be using 2821's at each site (max ram/flash and ent ios) at each site (routers are already in place).
To Be upgraded to
Site 1: 6 MPLS Links (Multi-Link) = 9mbps
Site 2: 2 MPLS Links (Multi-Link) = 3mbps
Site 3: 2 MPLS Links (Multi-Link) = 3mbps
Site 4: 2 MPLS Links (Multi-Link) = 3mbps
Site 5: 2 MPLS Links (Multi-Link) = 3mbps
Site 6: 2 MPLS Links (Multi-Link) = 3mbps
Site 1 - 80 Cisco handsets
1 Cisco Recept Handset
1 Cisco conference unit
Site 2 - 12 Cisco Handsets
1 Cisco Recep Handset
1 Cisco Conference Unit
Site 3 - 130 Cisco Handsets
2 Cisco Recep Handset
1 Cisco Conference Unit
Site 4 - 35 Cisco Handsets
1 Cisco Recept Handset
1 Cisco Conference Unit
Site 5 - 20 Cisco Handsets
1 Cisco Recept Handset
1 Cisco Conference Unit
Site 6 - 40 Cisco Handsets
1 Cisco Recept Handeset
1 Cisco Conference Unit
Question 1 -
http://www.experts-exchange.com/Networking/Telecommunications/IP_Telephony/VoIP/Q_23344775.htmlQuestion 2 -
http://www.experts-exchange.com/Networking/Telecommunications/IP_Telephony/VoIP/Q_23344810.htmlStart Free Trial
