Cisco 1750
The Cisco 1750 is an entry-level multiservice router supporting VoIP.The 1750
router can support 2 to 4 analog voice ports, as well as the FXS, FXO, and E&M
voice interface cards. It is typically used as a small-scale toll bypass solution.These
voice interface cards are the same modules used with the Cisco 2600 and 3600
series routers.VoIP call admission via RSVP has been supported on the 1750
since release 12.1(3)XI.
Cisco IOS Release 12.1(3)T supports the following features:
Low Latency Queuing for Voice over Frame Relay
H.323 voice (v2) support
RAS protocol voice (v2) enhancement support
DiffServ
Fax relay enhancements
Another new feature supported in 12.1(5)XM or later is digital CAS (E&M)
interfaces in addition to the analog (FXO, FXS, and E&M) interfaces.The 1750
router is not a typical gateway in a CallManager environment. Again, the Cisco
1750 is a good fit for the small office environment deploying a toll-bypass solution.
For example, let’s imagine we have a company with a main office in a
metropolitan area and have several small field offices. In the field offices, the 1750
could be used to connect to a key system with a FXO port on the switch trunk
side and have WAN connectivity back to the main office.This would allow the
several field offices to utilize their current WAN circuits for voice and data,
which would eliminate long distance charges back to headquarters.