z**r
发帖数: 17771 | 1 http://www.magicjack.com/
这个连pc都不用http://www.ooma.com/
how it works, I mean, is it just promoting its product or the business model
can be really free? |
j*a
发帖数: 14423 | 2 250块 谁知道这公司能活多久?
model
【在 z**r 的大作中提到】
: http://www.magicjack.com/
: 这个连pc都不用http://www.ooma.com/
: how it works, I mean, is it just promoting its product or the business model
: can be really free?
|
i*******d
发帖数: 1430 | 3 这可不好说，这个公司已经存在有数年之久了，包括amazon和costco都在卖。还是很有
诱惑力的。用够一年就够本了，超过一年就赚了。costco甚至可以退。
【在 j*a 的大作中提到】
: 250块 谁知道这公司能活多久?
:
: model
|
m**t
发帖数: 1292 | 4
model
It is only trial free for 30 days or so then they start stealing on your
credit card. The reality is that a lot people simply forgot to cancel or
return the service :)
【在 z**r 的大作中提到】
: http://www.magicjack.com/
: 这个连pc都不用http://www.ooma.com/
: how it works, I mean, is it just promoting its product or the business model
: can be really free?
|
z**r
发帖数: 17771 | 5 well, you pay only once
【在 m**t 的大作中提到】
:
: model
: It is only trial free for 30 days or so then they start stealing on your
: credit card. The reality is that a lot people simply forgot to cancel or
: return the service :)
|
S******n
发帖数: 617 | 6 any recomendation on an ISDN PRI simulator? hoho
【在 z**r 的大作中提到】
: well, you pay only once
|
z**r
发帖数: 17771 | 7 I have no clue... haven't touched ISDN long long time
【在 S******n 的大作中提到】
: any recomendation on an ISDN PRI simulator? hoho
|
S******n
发帖数: 617 | 8 ai, ISDN PRIs are still dominant in voice but Cisco already dropped
ISDN from their exams.
【在 z**r 的大作中提到】
: I have no clue... haven't touched ISDN long long time
|
z**r
发帖数: 17771 | 9 don't think ISDN is still dominant, but I am not sure. From what I know,
pretty much all major teleco's have migrated to VoIP architecture, as well
as large enterprises. even in consumer market, voip is beefing up so quickly
, that's why the cash cows in old days are moving to FTTx/xDSL and IPTV for
new revenue
【在 S******n 的大作中提到】
: ai, ISDN PRIs are still dominant in voice but Cisco already dropped
: ISDN from their exams.
|
p******h
发帖数: 1783 | 10 the real free within the US now is google voice,
input the phone u want to call and your own phone, press connect,
then phone to phone, totally free within US, 2c to China
model
【在 z**r 的大作中提到】
: http://www.magicjack.com/
: 这个连pc都不用http://www.ooma.com/
: how it works, I mean, is it just promoting its product or the business model
: can be really free?
|
|
|
z**r
发帖数: 17771 | 11 you forgot one thing, :) how can you have your own number for free?
【在 p******h 的大作中提到】
: the real free within the US now is google voice,
: input the phone u want to call and your own phone, press connect,
: then phone to phone, totally free within US, 2c to China
:
: model
|
S******n
发帖数: 617 | 12 I feel big companies still use ISDN PRIs as their main voice interfaces
to Telco. VzB asks less than 2c per min on long distance calls,for example,
cheap enough even compared w/ VoIP providers...
Within the enterprice of course more and more people dump Nortel PBX
and jump to Cisco CUCM. (or Avaya....)
quickly
for
【在 z**r 的大作中提到】
: don't think ISDN is still dominant, but I am not sure. From what I know,
: pretty much all major teleco's have migrated to VoIP architecture, as well
: as large enterprises. even in consumer market, voip is beefing up so quickly
: , that's why the cash cows in old days are moving to FTTx/xDSL and IPTV for
: new revenue
|
p******h
发帖数: 1783 | 13 if u use gizmoproject, u can forward the call to gizmo number, that is free
of course the access to Internet may not be free.
【在 z**r 的大作中提到】
: you forgot one thing, :) how can you have your own number for free?
|
z**r
发帖数: 17771 | 14
this could be true for those companies which still use traditinal PBX, but
definitely not the case that use VoIP architecture
This also can be true because Verizon has migrated to VoIP architecture, the
last mile can be either circuit or IP links. IP is definitely cheaper, but
Verizon wants to keep its existing customers that still use PBX
【在 S******n 的大作中提到】
: I feel big companies still use ISDN PRIs as their main voice interfaces
: to Telco. VzB asks less than 2c per min on long distance calls,for example,
: cheap enough even compared w/ VoIP providers...
: Within the enterprice of course more and more people dump Nortel PBX
: and jump to Cisco CUCM. (or Avaya....)
:
: quickly
: for
|
S******n
发帖数: 617 | 15 ah? I thought this is the most popular structure: o)<
VzB/ATT ISDN PRIs --> MFT-T1s on Cisco gateways --> CUCM -- IP phones
the
but
【在 z**r 的大作中提到】
:
: this could be true for those companies which still use traditinal PBX, but
: definitely not the case that use VoIP architecture
: This also can be true because Verizon has migrated to VoIP architecture, the
: last mile can be either circuit or IP links. IP is definitely cheaper, but
: Verizon wants to keep its existing customers that still use PBX
|
z**r
发帖数: 17771 | 16 let's think about it from another way,
1) you do agree that verzion has migrated to packet network (including
softswitch, packet switching) architecture, right?
2) if yes, they need their gateway to the TDM network, in order to talk to
others that are still on TDM network, right?
3) then it doesn't make sense for customers to have another gateway to
translate the voice from packet switching->circuit switching->packet
switching->circuit switching, again and again, right?
4)now do you agree with m
【在 S******n 的大作中提到】
: ah? I thought this is the most popular structure: o)<
: VzB/ATT ISDN PRIs --> MFT-T1s on Cisco gateways --> CUCM -- IP phones
:
: the
: but
|
S******n
发帖数: 617 | 17 我的确同意你说的。
不过这和我每天看到的不一样啊，大家用ISDN PRIs接到思科路由器上，然后
通过这个PRIs连到PSTN。而且这些线路都是现成的。
当然我从来没见过PSTN那面是什么样子，呵呵。
【在 z**r 的大作中提到】
: let's think about it from another way,
: 1) you do agree that verzion has migrated to packet network (including
: softswitch, packet switching) architecture, right?
: 2) if yes, they need their gateway to the TDM network, in order to talk to
: others that are still on TDM network, right?
: 3) then it doesn't make sense for customers to have another gateway to
: translate the voice from packet switching->circuit switching->packet
: switching->circuit switching, again and again, right?
: 4)now do you agree with m
|
z**r
发帖数: 17771 | 18 one or 2 implementations may not be the typical design because of its own
specific reasons
【在 S******n 的大作中提到】
: 我的确同意你说的。
: 不过这和我每天看到的不一样啊，大家用ISDN PRIs接到思科路由器上，然后
: 通过这个PRIs连到PSTN。而且这些线路都是现成的。
: 当然我从来没见过PSTN那面是什么样子，呵呵。
|
