IP Telephony on 11c?

[softnoggin]

Please edumacate me.

Here are the facts:

We have an office in our mine that is a mile plus away from our opt 11c switch. We have some analog sets there, but we have need for a couple more.

We are in the process of getting a fiber-backed LAN (100FX) run to this office, which will free up a couple of wire-pair from our campus T1 to use for phonesets. But I expect that will only buy us so much time before we need to add more copper... Copper is fairly expensive for us to run, as we have to get it to the shaft then run it down the shaft ~600 feet.

So here are the questions:

We are throwing around the idea of adding IP telephony into this. With, say, 4 PCs and 4 digital sets, will we see QoS issues due to bandwidth? What kind of equipment will we need for the switch and will we need a router or anything external to the phone switch? How many extensions does said card support? What kind of costs can we expect? What other issues do we need to consider before we decide?

I know I left this wide open, but I appreciate any input you can give me.

Thanks

 

[wdhb]

the card you need is an itg & you can support 30 phones. if you have 25.40b you can buy it ism's of 8. sorry, i don't know the costs for your market

qos is a tricky question. depending on your bandwidth & the type of data you might get away without it.

copper may be unfashionable, but it may still be cheaper

 

[Crowd36]

The ITG card can support 32 calls from IP phones to the Meridian at the same time.

The card can "register" up to 128 IP phones.

After the call has been set up, a call between 2 IP phones is "peer to peer" with only a very small "heartbeat" back to the Meridian.

Full quality speech using G711 codec uses about 100k of bandwidth.

For QoS, you can use Baystack Business Policy Switches at both ends of the network. Voice and Data are given separate VLANs and Voice is given priority over data. However as wdhb says, you might get away with it if you only have 4 PCs and 4 Phones.

My experience in the UK is that the IP phones cost about the same as Meridian digital phones. BUT the keycodes are quite expensive (about TWICE the cost of a phone, PER UNIT)

Hope this is useful.

 

[chaldhanno]

and you will need router also. if it is on different network, and depends what connectivity u are having. if u can have a utp then layer 2 switch like baystack or cisco 3540 or 1924 will do. but u will require routers if u are using diferent ip networks.

Just my 2 cents

Regards
panky

 

[SMC1]

My 2 cents

I have a simular situation, I have an office a mile down the road. I found the most cost effective way to give them 13 phones with their current extensions was the I2004. They do cost about the same as a digital phone. As for the ISM it was aroung 80$ per phone. QoS I am running a T1 tie between two cisco 1700 series routers and found that I have only once in the 8 months it has been installed every had to "Q" anything up. I had monitored the t1 for a while and any given time I really was only using 64K witch is 3 conversations.

Componets you will need is the SMC line side IP3.0, i2004, and rls 25.40B, ISM limits.

Nortel is due to rls a wireless IP phone in this quater.