sip.conf

[192.168.4.4]
callgroup=1
pickupgroup=1
type=friend
dtmfmode=rfc2833
insecure = invite
host=192.168.4.4
canreinvite=no
disallow=all
allow=ulaw
;allow=all
context=incoming


CLI
asterisk*CLI> sip show peer 192.168.4.4
asterisk*CLI>

  * Name       : 192.168.4.4
  Secret       : <Not set>
  MD5Secret    : <Not set>
  Context      : incoming
  Subscr.Cont. : <Not set>
  Language     : ru
  AMA flags    : Unknown
  Transfer mode: open
  CallingPres  : Presentation Allowed, Not Screened
  Callgroup    : 1
  Pickupgroup  : 1
  Mailbox      :
  VM Extension : asterisk
  LastMsgsSent : 32767/65535
  Call limit   : 0
  Dynamic      : No
  Callerid     : "" <>
  MaxCallBR    : 384 kbps
  Expire       : -1
  Insecure     : invite
  Nat          : RFC3581
  ACL          : No
  T38 pt UDPTL : No
  CanReinvite  : No
  PromiscRedir : No
  User=Phone   : No
  Video Support: No
  Text Support : No
  Trust RPID   : No
  Send RPID    : No
  Subscriptions: Yes
  Overlap dial : No
  DTMFmode     : rfc2833
  ToHost       : 192.168.4.4
  Addr->IP     : 192.168.4.4 Port 5060
  Defaddr->IP  : 0.0.0.0 Port 0
  Def. Username:
  SIP Options  : (none)
  Codecs       : 0x4 (ulaw)
  Codec Order  : (ulaw:20)
  Auto-Framing:  No
  Status       : Unmonitored
  Useragent    :
  Reg. Contact :
asterisk*CLI>
asterisk*CLI>