Specifications

4-3
Cisco ATA 186 Installation and Configuration Guide
OL-1267-01
Chapter 4 Protocol-Specific Configurations
About Gatekeeper Requirements for H.323
Connecting to a Network Time Protocol Server
If you want to use Caller ID (SIP) or security features (H.323), connect the
gateway to a functioning network time protocol (NTP) server. When using
Cisco IOS, enter:
ntp server ip_address
clock timezone PST -8
Note For information on how to access accounting information, see your Cisco IOS
documentation.
Using ISDN/EI
If you are using ISDN, the requirements for E1 are:
ISDN switch-type primary-5ess
voice rtp send-rcv
Configuration depends on your WAN connection. The following example shows
a 24-channel PRI connected to a T1 VIC slot:
controller T1 0
framing esf
clock source linelinecode b8zs
pri-group timeslots 1-24